三十一、Swoole 基础学习笔记 - Swoole 协程核心 API
hi，我是温新，一名PHPer
文章基于 Swoole 5.0.1 版本编写。
学习目标：了解协程相关 API
说明：本篇文章结合官方文档编写及参考网络资料编写，虽非全部原创，但也是结合了自己的理解，若转载请附带本文 URL，编写不易，持续编写更不易，谢谢！
本篇文章学习协程的相关 API。
create
语法：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">create</span>(<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">callable</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$function</span>, ...<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$args</span>): <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">int</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">|</span><span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">false</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">go</span>(<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">callable</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$function</span>, ...<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$args</span>): <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">int</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">|</span><span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">false</span> <span style="box-sizing: border-box;color: rgb(98, 151, 85) !important">// 参考php.ini的use_shortname配置</span></span>
含义：创建一个新的协程，并立即执行。
返回值：成功返回协程 ID；失败返回 false。
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$id1</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">create</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">sleep</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'hi，我是王美丽，我来自协程'</span>. <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'协程 ID '</span> . <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$id1</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(98, 151, 85) !important">// 短名称创建协程</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$id2</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">go</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'hi， 我是郝帅，我也来自协程，我是来寻找王美丽'</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'协程 ID '</span> . <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$id2</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span>
协程开销：
每个协程都是相互独立的，需要创建单独的内存空间 (栈内存)，在 PHP-7.2 版本中底层会分配 8K 的 stack 来存储协程的变量，zval 的尺寸为 16字节，因此 8K 的 stack 最大可以保存 512 个变量。协程栈内存占用超过 8K 后 ZendVM 会自动扩容。
set
含义：协程设置，设置协程相关选项。关于参数参考文档。
语法：
<span style="color: rgb(0, 176, 240);">Swoole\Coroutine::set(array $options);</span><br></br>
getOptions
含义：获取设置的协程相关选项。
语法：
<span style="color: rgb(0, 176, 240);">Swoole\Coroutine::getOptions(): null|array;</span><br></br>
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(98, 151, 85) !important">// 设置参数</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">set</span>([</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(98, 151, 85) !important">// 全局最大线程数</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'max_coroutine'</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">10</span>,</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(98, 151, 85) !important">// 最大并发请求数</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'max_concurrency'</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">20</span>,</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">]);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">create</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(98, 151, 85) !important">// 设置参数</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">print_r</span>(<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">getOptions</span>());</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span>
exists
含义：判断指定协程是否存在。
语法：
<span style="color: rgb(0, 176, 240);">Swoole\Coroutine::exists(int $cid = 0): bool</span><br></br>
案例
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$coroutineId</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">create</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'hi，来自外星的王美丽，欢迎你，这是地球'</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">if</span> (<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">exists</span>(<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Co</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">getCid</span>())) {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'hi,王美丽，我是郝帅'</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> }</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span>
getCid
含义：获取当前协程的唯一 ID, 它的别名为 getuid, 是一个进程内唯一的正整数。
语法：
<span style="color: rgb(0, 176, 240);">Swoole\Coroutine::getCid(): int</span><br></br>
返回值：成功返回当前协程 ID，失败返回 -1。
getPcid
含义：获取当前协程的父 ID。
语法：
<span style="color: rgb(0, 176, 240);">Swoole\Coroutine::getPcid([$cid]): int</span><br></br>
返回值：协程 cid，参数缺省，可传入某个协程的 id 以获取它的父 id。
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">getPcid</span>() . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(98, 151, 85) !important">// 协程容器</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">\Co\run</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(98, 151, 85) !important">// 不在协程环境中</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">getPcid</span>() . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">go</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(98, 151, 85) !important">// 返回值 1，在协程环境中</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">getPcid</span>() . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(98, 151, 85) !important">// 返回值 2，当前协程 ID</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$cid</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">getCid</span>();</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'当前协程 ID'</span> . <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$cid</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'当前协程父ID'</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">getPcid</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$cid</span>) . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> });</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span>
yield
含义：手动让出当前协程的执行权。
语法：Swoole\Coroutine::yield();
案例：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$cid</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">create</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'co 1 start'</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(98, 151, 85) !important">// 让出当前协程执行权</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">yield</span>();</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'co 1 end'</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">create</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">use</span> (<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$cid</span>) {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'co 2 start'</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">sleep</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(98, 151, 85) !important">// 恢复让出执行权的协程执行</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">resume</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$cid</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'co 2 end'</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span>
输出结果
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$php</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">31</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">swoole</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">coroutine</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">api</span>.<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">php</span> </span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">co</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">start</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">co</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">2</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">start</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">co</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1</span> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">end</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">co</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">2</span> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">end</span></span>
释义：
1、代码执行第一个协程，开始输出 co 1 start；
2、第一个协程遇到 yield，退出该协程执行，保存当前环境；
3、第二个协程执行，输出 co 2 start；然后睡一秒；
4、第二个协程睡一后开始执行，遇到手动恢复要执行的第一个开始，返回到第一个协程，输出 co 1 end；
5、第一个协程执行完毕后，返回到第二个协程，然后输出 co 2 end。
resume
含义：手动恢复某个协程，使其继续运行，不是基于 IO 的协程调度。
语法：Swoole\Coroutine::resume(int $coroutineId);
案例：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$id</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">create</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(98, 151, 85) !important">// 不知道是什么 ID，文档说明</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$id</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Co</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">getuid</span>();</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'start co '</span> . <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$id</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">yield</span>();</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'resume co '</span> . <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$id</span> . <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">' @1'</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">yield</span>();</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'resume co '</span> . <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$id</span> . <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">' @2'</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'start to resume '</span> . <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$id</span> . <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'@1'</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Co</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">resume</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$id</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'start to resume '</span> . <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$id</span> . <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'@2'</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Co</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">resume</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$id</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'end'</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span>
输出结果
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$php</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">31</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">swoole</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">coroutine</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">api</span>.<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">php</span> </span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">start</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">co</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">start</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">to</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">resume</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">@1</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">resume</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">co</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">@1</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">start</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">to</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">resume</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">@2</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">resume</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">co</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">@2</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">end</span></span>
list
含义：遍历当前进程内的所有协程。
语法：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">list</span>(): <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\Iterator</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">listCoroutines</span>(): <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroitine\Iterator</span></span>
案例：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">create</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">create</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$coros</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">list</span>();</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">foreach</span> (<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$coros</span> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">as</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$cid</span>) {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">print_r</span>(<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">getBackTrace</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$cid</span>));</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> }</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> });</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span>
输出结果：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Array</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">(</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">0</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Array</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> (</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">file</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">/</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">home</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">/</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">www</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">/</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">test</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">/</span><span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">31</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">swoole</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">coroutine</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">api</span>.<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">php</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">line</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">113</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">getBackTrace</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">class</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">type</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> ::</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">args</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Array</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> (</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">0</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">2</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> )</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> )</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Array</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> (</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> {<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">closure</span>}</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">args</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Array</span>()</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> )</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">)</span>
getBackTrace
义：获取协程函数调用栈。
语法：
<span style="color: rgb(0, 176, 240);">Swoole\Coroutine::getBackTrace(int $cid = 0, int $options = DEBUG_BACKTRACE_PROVIDE_OBJECT, int $limit = 0): array</span><br></br>
参数：
$cid：协程的 CID；
$options：设置选项
默认值：
DEBUG_BACKTRACE_PROVIDE_OBJECT【是否填充object的索引】其它值：
DEBUG_BACKTRACE_IGNORE_ARGS【是否忽略 args 的索引，包括所有的 function/method 的参数，能够节省内存开销】$limit：限制返回堆栈帧的数量
案例：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">test1</span>() {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">test2</span>();</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">}</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">test2</span>() {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">while</span> (<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">true</span>) {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">sleep</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">5</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">__FUNCTION__</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> }</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">}</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">\Co\run</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$cid</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">create</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">test1</span>();</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> });</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> </span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">create</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">use</span> (<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$cid</span>) {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'backTrace '</span> . <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$cid</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">print_r</span>(<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">getBackTrace</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$cid</span>));</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">sleep</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">3</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'当前协程运行时间：'</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">getElapsed</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$cid</span>). <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'当前协程占用内存：'</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">getStackUsage</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$cid</span>). <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> });</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span>
getElapsed
含义：获取协程运行的时间以便于分析统计或找出僵尸协程。
含义：获取协程运行的时间以便于分析统计或找出僵尸协程。
语法：Swoole\Coroutine::getElapsed([$cid]): int。
返回值：协程已运行的时间浮点数，毫秒级精度。如：协程运行时间：3004
getStackUsage
含义：获取当前 PHP 栈的内存使用量。
语法：Swoole\Coroutine::getStackUsage([$cid]): int
join
含义：并发执行多个协程。
语法：Swoole\Coroutine::join(array $cid_array, float $timeout = -1): bool
参数：
- array $cid_array：需要执行协程的
CID数组； - float $timetout：总的超时时间，超时后会立即返回。但正在运行的协程会继续。
案例：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\run</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$status</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">join</span>([</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\go</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">use</span> (<span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">&</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$result</span>) {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$result</span>[<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'baidu'</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">strlen</span>(<span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">file_get_contents</span>(<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'https://www.baidu.com/'</span>));</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> }),</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\go</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">use</span> (<span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">&</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$result</span>) {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$result</span>[<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'taobao'</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">strlen</span>(<span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">file_get_contents</span>(<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'https://www.taobao.com/'</span>));</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> }),</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> ], <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">var_dump</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$result</span>, <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$status</span>,<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">swoole_strerror</span>(<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">swoole_last_error</span>(), <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">9</span>));</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span>
输出结果：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$php</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">31</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">swoole</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">coroutine</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">api</span>.<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">php</span> </span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">array</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">2</span>) {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">"baidu"</span>]<span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">int</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">9508</span>)</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">"taobao"</span>]<span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">int</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">87554</span>)</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">}</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">bool</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">true</span>)</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">string</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">7</span>) <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">"Success"</span></span>
stats
含义：获取协程状态。
语法：Swoole\Coroutine::stats(): array
返回值如下表格：
案例：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">create</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\COroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">create</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">print_r</span>(<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">stats</span>());</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> });</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span>
输出结果：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$php</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">31</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">swoole</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">coroutine</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">api</span>.<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">php</span> </span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Array</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">(</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">event_num</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">0</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">signal_listener_num</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">0</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">aio_task_num</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">0</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">aio_worker_num</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">0</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">aio_queue_size</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">0</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">c_stack_size</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">2097152</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">coroutine_num</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">2</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">coroutine_peak_num</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">2</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">coroutine_last_cid</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">2</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">)</span>
defer
含义：用于资源的释放，会在协程关闭之前 (即协程函数执行完毕时) 进行调用，就算抛出了异常，已注册的 defer 也会被执行。
语法：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">defer</span>(<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">callable</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$function</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">defer</span>(<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">callable</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$function</span>); <span style="box-sizing: border-box;color: rgb(98, 151, 85) !important">// 短名API</span></span>
注意：
它的调用顺序是逆序的（先进后出）, 也就是先注册
defer的后执行，先进后出。逆序符合资源释放的正确逻辑，后申请的资源可能是基于先申请的资源的，如先释放先申请的资源，后申请的资源可能就难以释放。
函数 batch
含义：并发执行多个协程，并且通过数组返回这这些方法的返回值。
语法：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\batch</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">array</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$tasks</span>, <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">float</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$timeout</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1</span>): <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">array</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> </span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(98, 151, 85) !important"># 参数</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">array</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$tasks</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：传入方法回调的数组，如果指定了</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">key，则返回值也会被该</span> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">key</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">指向；</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">float</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$timeout</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">总的超时时间，超时后会立即返回。但正在运行的协程会继续执行完毕，而不会中止</span></span>
返回值：返回一个数组，里面包含回调的返回值。如果 $tasks 参数中，指定了 key，则返回值也会被该 key 指向。
案例：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$startTIme</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">microtime</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">true</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">set</span>([</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'hook_flags'</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">SWOOLE_HOOK_ALL</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">]);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\run</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$use</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">microtime</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">true</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$results</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\batch</span>([</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'file_put_contents'</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$content</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">file_get_contents</span>(<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'https://www.baidu.com'</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">return</span> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">file_put_contents</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">__DIR__</span> . <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'/greeter.txt'</span>, <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$content</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> },</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'gethostbyname'</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">return</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">gethostbyname</span>(<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'localhost'</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> },</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'sleep'</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(98, 151, 85) !important">// 返回NULL 因为超过了设置的超时时间0.1秒，</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(98, 151, 85) !important">// 超时后会立即返回。但正在运行的协程会继续执行完毕，而不会中止。</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">sleep</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">return</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">true</span>; </span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> },</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'usleep'</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">usleep</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1000</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">return</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">true</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> },</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> ], <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">0.1</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$use</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">microtime</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">true</span>) <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$use</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'并发执行完成时间：'</span> . <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$use</span> . <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'秒'</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">print_r</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$results</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$endTime</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">microtime</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">true</span>) <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$startTIme</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'花费时间：'</span> . <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$endTime</span> . <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'秒'</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span>
输出结果：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$php</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">31</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">swoole</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">coroutine</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">api</span>.<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">php</span> </span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">并发执行完成时间：0</span>.<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1020028591156</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">秒</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Array</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">(</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">file_put_contents</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> </span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">gethostbyname</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">127.0</span>.<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">0.1</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">sleep</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> </span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">usleep</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">)</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">花费时间：1</span>.<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">0037970542908</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">秒</span></span>
函数 parallel
含义：并发执行多个协程。
语法：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\parallel</span>(<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">int</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$n</span>, <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">callable</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$fn</span>): <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">void</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(98, 151, 85) !important"># 参数</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$n</span> : <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">设置最大的协程数为</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$n</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$fn</span> : <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">对应需要执行的回调函数。</span></span>
案例：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$startTIme</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">microtime</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">true</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\run</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$use</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">microtime</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">true</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$results</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> [];</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\parallel</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">2</span>, <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">use</span> (<span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">&</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$results</span>) {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\System</span>::<span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">sleep</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">0.2</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$results</span>[] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\System</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">gethostbyname</span>(<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'localhost'</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> });</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$use</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">microtime</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">true</span>) <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$use</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'并发执行花费时间：'</span> . <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$use</span> . <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'秒'</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">print_r</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$results</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$endTime</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">microtime</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">true</span>) <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$startTIme</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'花费时间 '</span> . <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$endTime</span> . <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'秒'</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span>
输出结果：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$php</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">31</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">swoole</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">coroutine</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">api</span>.<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">php</span> </span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">并发执行花费时间：0</span>.<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">20351409912109</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">秒</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Array</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">(</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">0</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">127.0</span>.<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">0.1</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">127.0</span>.<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">0.1</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">)</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">花费时间</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">0.20427894592285</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">秒</span></span>
函数 map
含义：类似 array_map，为数组的每个元素应用回调函数。
语法：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\map</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">array</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$list</span>, <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">callable</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$fn</span>, <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">float</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$timeout</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1</span>): <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">array</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(98, 151, 85) !important"># 参数</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$list</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：运行</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$fn</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">函数的数组；</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$fn</span> : <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$list</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">数组中的每个元素需要执行的回调函数</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$timeout</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">总的超时时间，超时后会立即返回。但正在运行的协程会继续执行完毕，而不会中止。</span></span>
案例：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">num</span>(<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">int</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$n</span>): <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">int</span> {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">return</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">array_product</span>(<span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">range</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$n</span>, <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1</span>));</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">}</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\run</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$results</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\map</span>([<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">4</span>,<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">5</span>,<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">6</span>,<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">7</span>], <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'num'</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">print_r</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$results</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span>
输出结果：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$php</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">31</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">swoole</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">coroutine</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">api</span>.<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">php</span> </span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Array</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">(</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">0</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">24</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">120</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">2</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">720</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> [<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">3</span>] <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=></span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">5040</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">)</span>
函数：deadlock_check
含义：协程死锁检测，调用时会输出相关堆栈信息；
语法：Swoole\Coroutine\deadlock_check();
默认开启，在 EventLoop 终止后，若存在协程死锁，底层会自动调用。
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