(Archived) How can a CRON job be created, modified or deleted via PHP

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To create a cron job via PHP following commands are required:

<? file_put_contents('/tmp/crontab.txt', '* * * * * NEW_CRON'.PHP_EOL); echo exec('crontab /tmp/crontab.txt'); ?>

The commands can also be used to edit the crontab or delete them.

To delete the crontab following command can be used:

echo exec('crontab -r');