Why should $HTTP_XXX_VARS not be used in PHP anymore?

Using $HTTP_XXX_VARS in PHP is deprecated and should not be used anymore because it poses a security risk by allowing user input to directly access global variables. Instead, it is recommended to use the $_GET, $_POST, and $_REQUEST superglobals to access user input securely. 

// Example of using $_GET superglobal instead of $HTTP_GET_VARS
$user_input = $_GET['user_input'];
echo $user_input;

Keywords

$HTTP_XXX_VARS PHP security deprecated superglobals

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