<?php

/**

 * 场景：

 * 进程监控文件改动

 */

date_default_timezone_set('PRC');

echo '进程id:' . posix_getpid() . PHP_EOL;

cli_set_process_title('php_c1');

$filepath = __DIR__ . DIRECTORY_SEPARATOR . 'a.txt';

if (!is_file($filepath)) {

    touch($filepath);

}

$child = new \Swoole\Process(function (\Swoole\Process $process) use ($filepath) {

    echo '子进程id:' . posix_getpid() . PHP_EOL;

    cli_set_process_title('php_c1_child');

    $watchMd5 = md5_file($filepath);

    while (true) {

        $getMd5 = md5_file($filepath);

        if (strcmp($watchMd5, $getMd5) !== 0) {

            echo date('[Y-m-d H:i:s] ') . $filepath . '被修改' . PHP_EOL;

            $watchMd5 = $getMd5;

        }

        sleep(3);

    }

}, true);

$child->start();

while (true) {

    $info = $child->read();

    if ($info) {

        echo $info;

    }

    sleep(3);

}

\Swoole\Process::wait();