What are some common pitfalls to avoid when setting up a cron job for database backups in PHP?

One common pitfall to avoid when setting up a cron job for database backups in PHP is not specifying the correct path to the PHP executable in the cron job command. This can result in the cron job not running as expected. To solve this issue, always specify the full path to the PHP executable in the cron job command.

0 0 * * * /usr/bin/php /path/to/backup_script.php