What are some common security measures to prevent a PHP directory like phpmyadmin from being infected with malware?

To prevent a PHP directory like phpmyadmin from being infected with malware, common security measures include keeping the software up to date, using strong passwords, restricting access to specific IP addresses, disabling directory browsing, and implementing file permissions.

// Example of implementing file permissions in PHP
chmod("/path/to/phpmyadmin/directory", 0755);