Linux中用PHP判断程序运行状态的2个方法

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;
        }
    }
}

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

system('ps -ef |grep wget > /root/pooy.txt');
$arr=file('/root/pooy.txt');
$total=count($arr);
for($i=0;$i<$total;$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__________________________________________________";
}