What resources or forums can PHP beginners refer to for guidance on common PHP issues like register_globals?

The `register_globals` directive in PHP allows variables to be automatically registered as global variables, which can lead to security vulnerabilities and unexpected behavior. It is recommended to disable `register_globals` in PHP configuration settings to prevent these issues. This can be done by setting `register_globals = Off` in the php.ini file.

// Disable register_globals in php.ini
ini_set('register_globals', 0);