note 34020 added to control-structures.switch

As jason at devnetwork dot net and others have pointed out, using switch() when you wish to compare against strings can be dangerous: $bug = 0; switch ($bug) { case 'fly': echo 'flies buzz'; break; case 'mantis': echo 'mantes pray'; break; default: echo 'swat, splat, you are dead'; break; } Will print "flies buzz", NOT "swat, splat, you are dead". Remember PHP says that 'fly' == 0, or in general string == 0 is true. Anyway, avoid that with: $bug = 0; switch ($bug === 0 ? '' : $bug) { case 'fly': echo 'flies buzz'; break; case 'mantis': echo 'mantes pray'; break; default: echo 'swat, splat, you are dead'; break; } Prints out what you expect: Swat Splat You are dead P.S.: that's an empty string (single quote single quote), not a spurious double quote. ---- Manual Page -- http://www.php.net/manual/en/control-structures.switch.php Edit Note -- http://master.php.net/manage/user-notes.php?action=edit+34020 Delete Note -- http://master.php.net/manage/user-notes.php?action=delete+34020&report=yes Reject Note -- http://master.php.net/manage/user-notes.php?action=reject+34020&report=yes