note 64285 added to control-structures.switch

<?php switch ($_GET['go']) { case "1": $inc = 'Page01.php'; break; case "2": $inc = 'Page02.php'; break; case "3": $inc = 'Page03.php'; break; case "4": $inc = 'Page04.php'; break; default: $inc = 'Page01.php'; break; } include ($inc); ?> On the above code what if the go doesn't exist, what coding do you put to keep from getting an error saying it's an undefined index. ---- Server IP: 66.163.161.117 Probable Submitter: 65.161.78.194 ---- X-Spam-Status: No, hits=3.1 required=5.0 tests=DATE_MISSING,FROM_NO_LOWER autolearn=no version=2.64 ---- Manual Page -- http://www.php.net/manual/en/control-structures.switch.php Edit -- http://master.php.net/note/edit/64285 Del: integrated -- http://master.php.net/note/delete/64285/integrated Del: useless -- http://master.php.net/note/delete/64285/useless Del: bad code -- http://master.php.net/note/delete/64285/bad+code Del: spam -- http://master.php.net/note/delete/64285/spam Del: non-english -- http://master.php.net/note/delete/64285/non-english Del: in docs -- http://master.php.net/note/delete/64285/in+docs Del: other reasons-- http://master.php.net/note/delete/64285 Reject -- http://master.php.net/note/reject/64285 Search -- http://master.php.net/manage/user-notes.php