What are the potential limitations or security risks of using PHP safe mode on a server?

Enabling PHP safe mode on a server can limit the functionality of PHP scripts and may not provide sufficient security measures to protect against modern threats. It is recommended to use alternative security measures such as setting proper file permissions, using secure coding practices, and implementing a firewall to protect the server.

// Example of setting proper file permissions in PHP
chmod("/path/to/file", 0644);