superglobals超全局变量之$GLOBALS, $_GET, $_POST, $_FILES, $_REQUEST, $_SESSION 等
/*****************bygarcon1986********************/ "; echo"localscope$x";}$x='globalx';test();//Note:Thisisa'superglobal',orautomaticglobal,variable.//Thissimplymeansthatitisavailableinallscopesthr