php可以利用pcntl扩展写多进程程序
//定义ticks declare(ticks=1); //产生子进程分支 $pid = pcntl_fork(); if ($pid == -1) { die("could not fork"); //pcntl_fork返回-1标明创建子进程失败 } else if ($pid) { exit(); //父进程中pcntl_fork返回创建的子进程进程号 } else { // 子进程pcntl_fork返回的时0 } // 从当前终端分离 if (posix_setsid() == -1) { die("could not detach from terminal"); } // 安装信号处理器 pcntl_signal(SIGTERM, "sig_handler"); pcntl_signal(SIGHUP, "sig_handler"); // 执行无限循环任务 while (1) { // do something interesting here } function sig_handler($signo) { switch ($signo) { case SIGTERM: // 处理中断信号 exit; break; case SIGHUP: // 处理重启信号 break; default: // 处理所有其他信号 } }
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