Resolved Modify crontab from php

[python]

Hello, I think scheduled tasks with the web user from plesk 12 in a centos 7. what I need is from php is to comment or uncomment this task (when necessary). The problem I have I can not find the file of the scheduled tasks that I must Modify ie to comment the line to cancel task.
Can someone tell me where plesk saves this file?
Greetings.

 

[Bitpalast]

These are located in /var/spool/cron, asorted by users.

 

[python]

Solved thanks