Which type of variable in PHP is accessible anywhere in the script?

In PHP, a global variable is accessible anywhere in the script. It can be accessed from within functions, outside functions, and across different files. Global variables have a global scope, meaning they can be accessed and modified from any part of the script. However, it's generally recommended to use global variables sparingly and follow good programming practices to avoid potential issues. Learn more: https://www.php.net/manual/en/language.variables.scope.php#language.variables.scope.global