What potential pitfalls should be considered when running PHP scripts as Cronjobs?

One potential pitfall when running PHP scripts as Cronjobs is that the environment variables may not be set correctly, leading to issues with paths, permissions, or other dependencies. To avoid this, it's important to set the correct environment variables within the Cronjob script itself.

<?php
// Set the correct environment variables for the Cronjob
putenv('PATH=/usr/local/bin');
putenv('HOME=/home/user');

// Your PHP script code here
// For example:
echo "Cronjob is running!";
?>