What are the potential pitfalls of trying to modify $_SERVER['PATH'] in PHP?

Modifying $_SERVER['PATH'] in PHP can potentially cause unintended consequences, such as breaking the functionality of other scripts or applications that rely on the server's default path configuration. It is generally not recommended to modify this variable directly. Instead, if you need to modify the PATH for a specific script, consider using the putenv() function to set a custom PATH for that script only.

putenv("PATH=/custom/path:" . getenv("PATH"));