Bug #62724 [NEW]: isset returns false but array_key_exists returns true (int keys)

From: max at kriegt dot es Operating system: Debian 6 PHP version: 5.4.5 Package: Arrays related Bug Type: Bug Bug description:isset returns false but array_key_exists returns true (int keys) Description: ------------ Hi, recently realized that isset not returning the same result as array_key_exists does for int-Keys. Test script: --------------- <?php $foo = array(null); var_dump( isset($foo[0]), array_key_exists(0, $foo) ); Expected result: ---------------- bool(true) bool(true) Actual result: -------------- bool(false) bool(true) -- Edit bug report at https://bugs.php.net/bug.php?id=62724&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=62724&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=62724&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=62724&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=62724&r=fixed Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=62724&r=needdocs Fixed in release: https://bugs.php.net/fix.php?id=62724&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=62724&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=62724&r=needscript Try newer version: https://bugs.php.net/fix.php?id=62724&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=62724&r=support Expected behavior: https://bugs.php.net/fix.php?id=62724&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=62724&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=62724&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=62724&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=62724&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=62724&r=dst IIS Stability: https://bugs.php.net/fix.php?id=62724&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=62724&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=62724&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=62724&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=62724&r=mysqlcfg