Bug #51657 [NEW]: switch() construction works wrong with empty arrays

From: Operating system: PHP version: 5.2.13 Package: Arrays related Bug Type: Bug Bug description:switch() construction works wrong with empty arrays Description: ------------ When building switch() structure using arrays, if array is empty, first case always fires (while it should not) (version 5.2.12) Test script: --------------- $a = array(); switch($a) { case (isset($a['a']) ): echo 'If $a is empty, you should not see it'; break; default: echo 'Hello.'; break; } -- Edit bug report at http://bugs.php.net/bug.php?id=51657&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=51657&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=51657&r=trysnapshot53 Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=51657&r=trysnapshot60 Fixed in SVN: http://bugs.php.net/fix.php?id=51657&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=51657&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=51657&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=51657&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=51657&r=needscript Try newer version: http://bugs.php.net/fix.php?id=51657&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=51657&r=support Expected behavior: http://bugs.php.net/fix.php?id=51657&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=51657&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=51657&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=51657&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=51657&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=51657&r=dst IIS Stability: http://bugs.php.net/fix.php?id=51657&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=51657&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=51657&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=51657&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=51657&r=mysqlcfg