note 78561 added to reserved.variables

I put some thing in an form input filed like this: ' " \ then submit to a php script. When use $_GET / $_POST / $_REQUEST to get this value, I always get: \' \" \\ In php expression it should be: $_REQUEST['field'] = "\\' \\\" \\\\"; Any one who can tell me why? ---- Server IP: 123.253.132.194 Probable Submitter: 58.83.239.94 ---- Manual Page -- http://www.php.net/manual/en/reserved.variables.php Edit -- https://master.php.net/note/edit/78561 Del: integrated -- https://master.php.net/note/delete/78561/integrated Del: useless -- https://master.php.net/note/delete/78561/useless Del: bad code -- https://master.php.net/note/delete/78561/bad+code Del: spam -- https://master.php.net/note/delete/78561/spam Del: non-english -- https://master.php.net/note/delete/78561/non-english Del: in docs -- https://master.php.net/note/delete/78561/in+docs Del: other reasons-- https://master.php.net/note/delete/78561 Reject -- https://master.php.net/note/reject/78561 Search -- https://master.php.net/manage/user-notes.php