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
722 people have browsed it

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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