Superglobals: built-in variables that are always available in all scopes
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Superglobals

superglobals in php are predefined variables which 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
$_GET
$_POST
$_FILES
$_COOKIE
$_SESSION
$_REQUEST
$_ENV

 

 

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