What are the potential risks of leaving register globals enabled in PHP scripts?

Leaving register globals enabled in PHP scripts can pose a security risk as it allows external input to automatically create global variables, making it easier for attackers to manipulate data and potentially execute malicious code. To solve this issue, it is recommended to disable register globals in the PHP configuration settings or manually unset any global variables created by external input.

// Disable register globals in php.ini file
register_globals = Off;