如何让php / apache使用AT守护进程安排任务

Question

is there a way to enable a php script (apache user) to schedule a task using the AT daemon?

I would like to pipe the task to the atd from my php script like this:

exec( "echo 'date > /some/dir/date.txt' | at now + 1 minute > /dev/null &" );

when I run the php script from the command line (root) everything is fine, however, when I run the script via a http request the at job is never created.

I am aware that apache doesn't have shell access, is there any work around available?

Answer 1

exec() does not use a shell so you can't use pipes etc..

Use backticks, shell_exec() or system() instead to make it work.

shell_exec("echo 'date > /some/dir/date.txt' | at now + 1 minute");