#20780 [Bgs]: switch ... case ... statement cannot distinguish a string with integer 0

ID: 20780 User updated by: rosewell@cnk.com.cn Reported By: rosewell@cnk.com.cn Status: Bogus Bug Type: Scripting Engine problem Operating System: Windows 2000 PHP Version: 4.2.3 New Comment: Thanks a lot for your tip. And now I've seen what a silly mistake I'd made. And I felt deeply sorry for disturbing you with such a silly fault. But I wonder if PHP can introduce a Not_a_Number value just like the NaN in JavaScript. For PHP and JavaScript are both loose-type language, i.e. scripting language. For some convention, I think, it is unusual to automatically convert a string (especially a NOT_A_NUMBER string) to an integer, in which most case is converted to 0 and is not intuitionistic. And I find many people before have complained about it. So I'll be glad that you'll consider it. Thank you again for your serious consideration. Previous Comments: ------------------------------------------------------------------------ [2002-12-03 01:16:39] chregu@php.net Sorry, but your problem does not imply a bug in PHP itself. For a list of more appropriate places to ask for help using PHP, please visit http://www.php.net/support.php as this bug system is not the appropriate forum for asking support questions. Thank you for your interest in PHP. See http://ch.php.net/manual/en/language.types.string.php#language.types.string.conversion ------------------------------------------------------------------------ [2002-12-02 23:54:45] rosewell@cnk.com.cn <?php $a = 'center'; switch ($a) { case 'left': case 0: echo 'left';break; case 'right': case 2: echo 'right';break; default:echo 'center'; } ?> The script should generate 'center',yet generate 'left';what's more,any string assigned to variable $a will generate the same error. The reason is the PHP scripting engine cannot distinguish a string with integer 0. I wonder if the switch statement can only be applied on integers. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=20780&edit=1