三十三、Swoole 基础学习笔记 - Swoole 系统 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：了解系统 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！
Coroutine\System 系统相关 API 的协程封装。大部分 API 基于 AIO 线程池实现。
官方推荐使用Co\System::sleep 或 Swoole\Coroutine\System::sleep
statvfs
含义：获取文件系统信息。
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\System</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">statvfs</span>(<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">string</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$path</span>): <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">array</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">|</span><span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">false</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(98, 151, 85) !important"># 参数</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$path</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：文件系统挂载的目录【如</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">，可以使用</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">df</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">和</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">mount</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">l</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">命令获取】</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\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(232, 191, 106) !important">print_r</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">statvfs</span>(<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'/usr/local/src'</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">33</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(232, 191, 106) !important">system</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">bsize</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">4096</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">frsize</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">4096</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">blocks</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">51328506</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">bfree</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">41599890</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">bavail</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">38974354</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">files</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">13107200</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">ffree</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">12521751</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">favail</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">12521751</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">fsid</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">3942528374396710653</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">flag</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">4096</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">namemax</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">255</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">)</span>
fwrite
含义：协程方式向文件写入数据。
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\System</span>::<span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">fwrite</span>(<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">resource</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$handle</span>, <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">string</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$data</span>, <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">int</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$length</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 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><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">$handle</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：文件句柄【必须是</span> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">fopen</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">打开的文件类型</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">stream</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">资源】</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$data</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：要写入的数据内容【可以是文本或二进制数据】</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">$length</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：读取的长度【默认为</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">0</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">，表示写入</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$data</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">的全部内容，$length</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">必须小于</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$data</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">的长度】</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">$fp</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">fopen</span>(<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'test.txt'</span>, <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'a+'</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\run</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">use</span> (<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$fp</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">$result</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\System</span>::<span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">fwrite</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$fp</span>, <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'我叫王美丽'</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">$result</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">fclose</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$fp</span>);</span>
fread
含义：协程方式读取文件。
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\System</span>::<span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">fread</span>(<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">resource</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$handle</span>, <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">int</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$length</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 style="box-sizing: border-box;color: rgb(18, 170, 228) !important">string</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"></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">$handle</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：文件句柄【必须是</span> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">fopen</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">打开的文件类型</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">stream</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">资源】</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$length</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：读取的长度【默认为</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">0</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">，表示读取文件的全部内容】</span></span>
返回值：读取成功返回字符串内容，读取失败返回 false
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">$fp</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">fopen</span>(<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'test.txt'</span>, <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'r'</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\run</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">use</span> (<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$fp</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">$result</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\System</span>::<span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">fread</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$fp</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">// 读取的长度为字节</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">// $result = Swoole\Coroutine\System::fread($fp, 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(232, 191, 106) !important">var_dump</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$result</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">fclose</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$fp</span>);</span>
fgets
含义：协程方式按行读取文件内容。
说明：底层使用了 php_stream 缓存区，默认大小为 8192 字节，可使用 stream_set_chunk_size 设置缓存区尺寸。
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\System</span>::<span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">fgets</span>(<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">resource</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$handle</span>): <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">string</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><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</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">读取到</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">EOL（\r</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">或</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">\n）将返回一行数据，包括</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">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">未读取到</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">EOL，但内容长度超过</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">php_stream</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">缓存区</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">8192</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">字节，将返回</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">8192</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">字节的数据，不包含</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">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">达到文件末尾</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">EOF</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">时，返回空字符串，可用</span> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">feof</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">判断文件是否已读完；</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">取失败返回</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">false。</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">$fp</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">fopen</span>(<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'test.txt'</span>, <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'r'</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 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">$fp</span>) {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">while</span> (<span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">!</span><span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">feof</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$fp</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\System</span>::<span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">fgets</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$fp</span>) . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> } </span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">fclose</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$fp</span>);</span>
readFile
含义：协程方式读取一个文件的内容。
语法：Swoole\Coroutine\System::readFile(string $filename): string|false
案例：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$file</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'test.txt'</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 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">$file</span>) {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$result</span> <span style="box-sizing: border-box;color: rgb(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">readFile</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$file</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">print_r</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$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">$content</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\System</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">readFile</span>(<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'test.txt'</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">print_r</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$content</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span>
writeFiel
含义：协程方式写入文件。
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\System</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">writeFile</span>(<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">string</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$filename</span>, <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">string</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$fileContent</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">$flags</span>): <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">bool</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(98, 151, 85) !important"># 参数</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$filename</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：文件名【必须有可写权限，文件不存在会自动创建。打开文件失败会立即返回</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !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(224, 108, 117) !important">$fileContent</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：写入到文件的内容【最大可写入</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">4</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">M】</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$flags</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：写入的选项【默认会清空当前文件内容，可以使用</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">FILE_APPEND</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">表示追加到文件末尾】</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\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">$content</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\System</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">writeFile</span>(<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'baidu.txt'</span>, <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">file_get_contents</span>(<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'https://www.baidu.com'</span>));</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">var_dump</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$content</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span>
sleep
含义：进入等待状态。
说明：相当于 PHP 中的 sleep 函数，不同的是 Coroutine::sleep 是协程调度器实现的，底层会 yield 当前协程，让出时间片，并添加一个异步定时器，当超时时间 到达时重新 resume 当前协程，恢复运行。使用 sleep 接口可以方便地实现超时等待功能。
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\System</span>::<span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">sleep</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">$seconds</span>): <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">void</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(98, 151, 85) !important"># 参数</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$seconds</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：睡眠的时间【必须大于</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">0</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">，最大不得超过一天时间（86400</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">秒）】</span></span>
exec
含义：执行一条 sheel 指令。底层自动进行协程调度。
语法：Swoole\Coroutine\System::exec(string $cmd): array
案例：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\run</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span>() {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$ret</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(232, 191, 106) !important">exec</span>(<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'ls'</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">$ret</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span>
gethostbyname
含义：将域名解析为 IP。
语法：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\System</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">gethostbyname</span>(<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">string</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$domain</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">$family</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">AF_INET</span>, <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">float</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$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(18, 170, 228) !important">string</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"></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">$domain</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：域名</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$family</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：域族</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">$timeout</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：超时时间</span></span>
案例：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\run</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span>() {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$ip</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">'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(232, 191, 106) !important">var_dump</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$ip</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span>
输出结果：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$php</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">33</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(232, 191, 106) !important">system</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">string</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">13</span>) <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">"14.215.177.38"</span></span>
getaddrinfo
含义：进行 DNS 解析，查询域名对应的 IP 地址。与 gethostbyname 不同，getaddrinfo 支持更多参数设置，而且会返回多个 IP 结果。
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\System</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">getaddrinfo</span>(<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">string</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$domain</span>, <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">int</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$family</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">AF_INET</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">$socktype</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">SOCK_STREAM</span>, <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">int</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$protocol</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">STREAM_IPPROTO_TCP</span>, <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">string</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$service</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">null</span>, <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">float</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$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 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"></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">$domain</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：域名</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$family</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：域族【AF_INET</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">表示返回</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">IPv4</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">地址，使用</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">AF_INET6</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">时返回</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">IPv6</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">地址】；</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">$socktype</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：协议类型；</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$protocol</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">协议；</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">$service</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$timeout</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：超时时间</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\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">$ret</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\System</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">getaddrinfo</span>(<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'www.baidu.com'</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">var_dump</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$ret</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">33</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(232, 191, 106) !important">system</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(209, 154, 102) !important">0</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">string</span>(<span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">13</span>) <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">"14.215.177.38"</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><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">13</span>) <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">"14.215.177.39"</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">}</span>
wait
含义：对应原有的 Process:wait，不同的是此 API 是协程版本，会造成协程挂起，可替换 Swoole\Process::wait 和 pcntl_wait 函数。
语法：Swoole\Coroutine\System::wait(float $timeout = -1): array|false
每个子进程启动后，父进程必须都要派遣一个协程调用
wait()(或waitPid()) 进行回收，否则子进程会变成僵尸进程，会浪费操作系统的进程资源。 如果使用了协程，必须是先创建进程，进程里面再开协程。而不是反过来，否则就是带着协程 fork 情况会非常复杂，导致底层很难处理。
waitPid
含义：和上述 wait 方法基本一致，不同的是此 API 可以指定等待特定的进程。
语法：
<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Coroutine\System</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">waitPid</span>(<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">int</span> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$pid</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">$timeout</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-</span><span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">1</span>): <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">array</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">|</span><span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">false</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> </span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(98, 151, 85) !important"># 参数</span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$pid</span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">：进程</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">id</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">$process</span> <span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">=</span> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">new</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole\Process</span>(<span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">function</span> () {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(198, 120, 221) !important">echo</span> <span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">'Hello Swoole'</span> . <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">PHP_EOL</span>;</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">});</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$process</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">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"></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 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">$process</span>) {</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$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\System</span>::<span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">waitPid</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$process</span><span style="box-sizing: border-box;color: rgb(86, 182, 194) !important">-></span><span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">pid</span>);</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(232, 191, 106) !important">print_r</span>(<span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">$status</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">33</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(232, 191, 106) !important">system</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">Hello</span> <span style="box-sizing: border-box;color: rgb(18, 170, 228) !important">Swoole</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">pid</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">34944</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">code</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</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>
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