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Linux中用PHP判断程序运行状态的2个方法_php实例

WBOY
Release: 2016-06-07 17:20:15
Original
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有时候在服务器上面写一些脚本的时候,经常要放到crontab里面定时运行。时间长了就有一个问题,那就是程序重复运行消耗太多的资源,怎么处理呢?下面我写了两种方法:

第一种:用linux里面的正则匹配

复制代码 代码如下:

function ifrun($clsname,$bf = 0)
{
    //下面进行检测,如有一个进程正在运行,则不运行
    $str=shell_exec("/bin/ps ax > /home/root/".$clsname."_run.txt");
    $str=shell_exec("/bin/grep -c '".$clsname.".php' /home/root/".$clsname."_run.txt");

    if($bf >0)
    {
        if($str >=$bf)
        {
            return 1;
        }
        else
        {
            return 0;
        }
    }
    else
    {
        if ($str>=2)
        {
           return 1;
        }
        else
        {
           return 0;
        }
    }
}

调用:

复制代码 代码如下:

if (ifrun('pooy',5)) {    die("pooy is running"); }

备注:pooy是程序pooy.php的名称!

第二种:把进程写到文件里面,然后用file函数去读取然后去匹配字符串

复制代码 代码如下:

system('ps -ef |grep wget > /root/pooy.txt');
$arr=file('/root/pooy.txt');
$total=count($arr);
for($i=0;$i  $count=array();
   if(stristr($arr[$i],'www/pooy') !== FALSE) {
    //echo '"earth" not found in string';
      $count[]='no';
      break;
  }

}

if(count($count) >= 1 )
{
    echo "A same programs are running";
    exit();
}else
{
    echo "start__________________________________________________";
}

注:”www/pooy” 是程序里面包含的字符串!


现在php程序在linux运行是否通畅多了呢?

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