Bug #17997: got wanning when combing switch & reference

From: Xuefer@21cn.com Operating system: shoul be all PHP version: 4.2.1 PHP Bug Type: Scripting Engine problem Bug description: got wanning when combing switch & reference 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 bug report at http://bugs.php.net/?id=17997&edit=1 -- Fixed in CVS: http://bugs.php.net/fix.php?id=17997&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=17997&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=17997&r=needtrace Try newer version: http://bugs.php.net/fix.php?id=17997&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=17997&r=support Expected behavior: http://bugs.php.net/fix.php?id=17997&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=17997&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=17997&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=17997&r=globals