if

if ( ! empty ( $HTTP_POST_VARS ) )

each

while

while ( list ( $k , $v ) = each ( $HTTP_POST_VARS ) )

if

if ( ! empty ( $_POST ) )

each

while

while ( list ( $k , $v ) = each ( $_POST ) )

if

if ( ! empty ( $HTTP_GET_VARS ) )

each

while

while ( list ( $k , $v ) = each ( $HTTP_GET_VARS ) )

$_GET

if

if ( ! empty ( $_GET ) )

$_GET

reset ( $_GET ) ;