PHP多进程并行执行php脚本

<?php

//fork.php

$cmds = [
    '/data/wwwroot/default/test1.php',
    '/data/wwwroot/default/test2.php',
    '/data/wwwroot/default/test3.php'
];


foreach($cmds as $cmd) {
    $pid = pcntl_fork();
    if ($pid == -1) { 
        //进程创建失败
            echo '创建子进程失败时返回-1';
            exit(-1);
        }
        else if($pid) { 
        //父进程会得到子进程号，所以这里是父进程执行的逻辑
            pcntl_wait($status,WNOHANG);
        }
        else{ 
        //子进程处理逻辑
            echo getmypid() , " 
";
            sleep(20);// 保持20秒，确保能被ps查到

            pcntl_exec('/usr/local/php/bin/php',$cmd);
            exit(0);
        }
}

# php fork.php  //使用php cls模式执行运行fork.php

# ps aux | grep fork.php 
root     61097  0.0  0.7 367880  7776 pts/1    S    14:22   0:00 php fork.php 
root     61098  0.0  0.7 367880  7776 pts/1    S    14:22   0:00 php fork.php 
root     61099  0.0  0.7 367880  7776 pts/1    S    14:22   0:00 php fork.php 
root     61311  0.0  0.0 103268   872 pts/2    R+   14:22   0:00 grep --color fork.php