Bug #67985 [NEW]: Incorrect last used array index copied to new array after unset

From: danielklein at airpost dot net Operating system: PHP version: 5.5.16 Package: Arrays related Bug Type: Bug Bug description:Incorrect last used array index copied to new array after unset Description: ------------ Unsetting the last item of an array that has a numeric key updates the last used index of the array but the previous information is used when copying this array. Changing unset() to array_pop() produces the expected behaviour. Test script: --------------- <?php // Output using xdebug $ary = array('zero', 'one', 'two'); //array_pop($ary); //array_pop($ary); unset($ary[1]); unset($ary[2]); $bry = $ary; $ary[] = 'three'; $bry[] = 'three'; var_dump($ary, $bry, $ary == $bry); ?> Expected result: ---------------- array (size=2) 0 => string 'zero' (length=4) 1 => string 'three' (length=5) array (size=2) 0 => string 'zero' (length=4) 3 => string 'three' (length=5) boolean false Actual result: -------------- array (size=2) 0 => string 'zero' (length=4) 1 => string 'three' (length=5) array (size=2) 0 => string 'zero' (length=4) 1 => string 'three' (length=5) boolean true -- Edit bug report at https://bugs.php.net/bug.php?id=67985&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=67985&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=67985&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=67985&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=67985&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=67985&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=67985&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=67985&r=needscript Try newer version: https://bugs.php.net/fix.php?id=67985&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=67985&r=support Expected behavior: https://bugs.php.net/fix.php?id=67985&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=67985&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=67985&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=67985&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=67985&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=67985&r=dst IIS Stability: https://bugs.php.net/fix.php?id=67985&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=67985&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=67985&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=67985&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=67985&r=mysqlcfg