PHP實現多進程並存執行指令碼

由於php的進程是不支援多線程的，有些情境為了方便以及提高效能，可以用php實現多進程以彌補這個不足：

#!/usr/bin/env php<?php$cmds=array(        array('/apps/bin/launcher.php','charge/promotion_props_stat.php','mobile',1),        array('/apps/bin/launcher.php','charge/promotion_props_stat.php','mobile',2),        array('/apps/bin/launcher.php','charge/promotion_props_stat.php','click',1),        array('/apps/bin/launcher.php','charge/promotion_props_stat.php','click',2),        array('/apps/bin/launcher.php','charge/promotion_props_stat.php',1),        array('/apps/bin/launcher.php','charge/promotion_props_stat.php',2));foreach($cmds as $cmd){        $pid=pcntl_fork();        if($pid==-1){ //進程建立失敗                die('fork child process failure!');        }        else if($pid){ //父進程處理邏輯                pcntl_wait($status,WNOHANG);        }        else{ //子進程處理邏輯                pcntl_exec('/usr/local/bin/php',$cmd);        }}