How can the use of register_globals impact PHP scripts?

When register_globals is enabled in PHP, it can lead to security vulnerabilities as it allows external input to overwrite global variables. This can potentially lead to injection attacks and unexpected behavior in scripts. To solve this issue, it is recommended to disable register_globals in the PHP configuration.

// Disable register_globals in PHP configuration
// This can be done by setting register_globals = Off in php.ini file