Introduction to Superglobals
Superglobal variables in PHP are built-in variables that are available everywhere in a script, no matter the scope.
Superglobals can be accessed from any part of your program, including inside functions, without needing the global keyword. They are essential in web development because they allow you to work with form data, sessions, cookies, and server information. Every superglobal starts with a dollar sign followed by an underscore, such as $_GET, $_POST, $_SESSION, or $_SERVER. This consistent naming makes them easy to recognize and distinguishes them from regular variables.
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Introduction to Superglobals
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Superglobal variables in PHP are built-in variables that are available everywhere in a script, no matter the scope.
Superglobals can be accessed from any part of your program, including inside functions, without needing the global keyword. They are essential in web development because they allow you to work with form data, sessions, cookies, and server information. Every superglobal starts with a dollar sign followed by an underscore, such as $_GET, $_POST, $_SESSION, or $_SERVER. This consistent naming makes them easy to recognize and distinguishes them from regular variables.
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