PHP Superglobals - PHP Global Variables - Superglobals in PHP

• Superglobals — Built-in variables that are always available in all scopes
• Several predefined variables in PHP are "superglobals", which means they are available in all scopes throughout a script. There is no need to do global $variable; to access them within functions or methods.
• These superglobal variables are:
• $GLOBALS
• $_SERVER
• $_REQUEST
• $_POST
• $_GET
• $_FILES
• $_ENV
• $_COOKIE
• $_SESSION

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