PHP-手动启动cron作业/让服务器代替用户工作

Question

I have a quite slow script that need to be executed frequently (about 30 times in a minute) so the user can't execute it and the cron job runs at most every minute.

So, is there a way (using PHP) to let the server works instead of the user?

Answer 1

This is quite easy: Use a flag file

Script running without user interaction (may be started by cron or shell, including PHP shell execute):

<?php
while (true) {
  while (file_exists('/path/to/flagfile')) sleep(1); //Can even use microsleep
  include ('/path/to/worker/script');
  touch('/path/to/flagfile');
}
?>

Script to trigger it (started from webserver via user interaction)

<?php
@unlink('/path/to/flagfile');
echo "Processing triggered!";
?>