如何使用cronjob每半小时运行一个PHP脚本[关闭]

How to run a Run a PHP Script for every half an hour with out cronjob ?

You can do it checking last update date for a file (that acts as flag).

index.php (or any file)

<?php
$stat = stat("flag.txt");
if(check if your $stat['mtime'] has more of 30 mins of last modification) {
 //run your script
 touch("flag.txt")
}
?>

Other than PHP code, this could be achieved by a messaging queue systems which is recommended.

Use sleep method in php script

like this

while(1)
{
//what do you want write here 
sleep(30*60)
}

because sleep method of php is work in seconds check this link click here

You can run your code in terminal,this is the alternate of unix cron

php filename.php