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Fundamentals · easy

9. Superglobals

Built-in global arrays.

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PHP provides superglobals like $_GET, $_POST, $_SESSION, $_SERVER, $_COOKIE, and $_FILES that are accessible in any scope without needing 'global'. They carry request data, server info, and session state.

Because superglobals contain user input, values from $_GET/$_POST must always be validated and sanitized before use.

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  1. 1. Which superglobal holds form data submitted via POST?

  2. 2. Which superglobal contains web server and request info?

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