如何在特定时间每天从目录中删除文件？

Question

My data.txt is generated each time when someone is visiting my site. I would like to delete this file on on specific time, let say 1:00AM daily. I found this script but I'm struggling to update the code :/ Any advice?

<?php
  $path = dirname(__FILE__).'/files';
  if ($handle = opendir($path)) {

    while (false !== ($file = readdir($handle))) {
        if ((time()-filectime($path.'/'.$file)) < 86400) {  // 86400 = 60*60*24
          if (preg_match('/\.txt$/i', $file)) {
            unlink($path.'/'.$file);
          }
        }
    }
  }
?>

Answer 1

The script you posted deletes .txt files in the given folder if they are older than a day but the problem is that this test only happens once - when you run the script.

What you need to do is run this script periodically. If you are running this on Linux you should probably add a cron job that executes this script periodically, say once an hour or once daily.

If you're running this on Windows, there is a task schedule that you could use to accomplish the same thing.