#17997 [Ver->Csd]: Warning when switch & reference are combined

ID: 17997 Updated by: zeev@php.net Reported By: Xuefer at 21cn dot com -Status: Verified +Status: Closed Bug Type: Scripting Engine problem Operating System: All PHP Version: 4CVS, 5CVS New Comment: This bug has been fixed in CVS. In case this was a PHP problem, snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. In case this was a documentation problem, the fix will show up soon at http://www.php.net/manual/. In case this was a PHP.net website problem, the change will show up on the PHP.net site and on the mirror sites in short time. Thank you for the report, and for helping us make PHP better. Fixed Previous Comments: ------------------------------------------------------------------------ [2003-08-10 18:12:54] helly@php.net Yes it refetches the variable passed to switch() to check whether it must be freed or not. ------------------------------------------------------------------------ [2002-07-23 16:45:31] hholzgra@php.net the error message is on the closing '}' of the switch ... does switch re-evaluate its argument on termination? this is scary! ------------------------------------------------------------------------ [2002-06-26 11:25:14] Xuefer at 21cn dot com let the sample code say the problem <? error_reporting(E_ALL); $str1 = '.........$...'; $str = &$str1; $l = strlen($str); for ($i = 0; $i < $l; $i ++) { switch ($str{$i}) { case '$': $str = '123'; // change string $i = -1; // set to -1, for next loop to be 0 $l = strlen($str); // u know what this do break; default: echo $str{$i}; } } ?> ----------- result: ----------- ......... Notice: Uninitialized string offset: 9 in d:\myfile\wwwroot\our-sky.com\test.php on line 19 123 how ever, if i change $str = '123'; to: $s = '123'; $str = &$s; no wanning ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=17997&edit=1