Some Common $_SERVER Elements : _SERVER « Form « PHP

Some Common $_SERVER Elements

Variable                            Contains                           Example
$_SERVER['PHP_SELF']                The current script.                /l.php
$_SERVER['HTTP_USER_AGENT']         The name and version of the client. Mozilla/4.6 ?(X11; I;Linux2.2. 6-15apmac ppc)
$_SERVER['REMOTE_ADDR']             The IP address of the client.
$_SERVER['REQUEST_METHOD']          Whether the request was GET or POST. POST
$_SERVER['QUERY_STRING']            For GET requests, the encoded data sent appended to the URL.           name=matt&address=unknown
$_SERVER['REQUEST_URI']             The full address of the request, including query string.           /phpbook/source/listing10.1.php? name=matt
$_SERVER['HTTP_REFERER']            The address of the page from which the request was made.     

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