Bug #52852 [NEW]: array_merge modifies numerical keys even if non-numerical

From: Operating system: osx PHP version: 5.3.3 Package: Documentation problem Bug Type: Bug Bug description:array_merge modifies numerical keys even if non-numerical Description: ------------ Not sure if this a documentation problem or a function problem, but either way, it is a bug :-) The documentation for array_merge says "If all of the arrays contain only numeric keys, the resulting array is given incrementing keys starting from zero." However, integer keys are always renumbered even if there is a non-numeric key present. Test script: --------------- <?php $test = array('foo' => false, 1=>2.34, 2=>13.12); var_dump($test); $result = array_merge(array(),$test); var_dump($result); Expected result: ---------------- array(3) { ["foo"]=> bool(false) [1]=> float(2.34) [2]=> float(13.12) } array(3) { ["foo"]=> bool(false) [1]=> float(2.34) [2]=> float(13.12) } Actual result: -------------- array(3) { ["foo"]=> bool(false) [1]=> float(2.34) [2]=> float(13.12) } array(3) { ["foo"]=> bool(false) [0]=> float(2.34) [1]=> float(13.12) } -- Edit bug report at http://bugs.php.net/bug.php?id=52852&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=52852&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=52852&r=trysnapshot53 Try a snapshot (trunk): http://bugs.php.net/fix.php?id=52852&r=trysnapshottrunk Fixed in SVN: http://bugs.php.net/fix.php?id=52852&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=52852&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=52852&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=52852&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=52852&r=needscript Try newer version: http://bugs.php.net/fix.php?id=52852&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=52852&r=support Expected behavior: http://bugs.php.net/fix.php?id=52852&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=52852&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=52852&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=52852&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=52852&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=52852&r=dst IIS Stability: http://bugs.php.net/fix.php?id=52852&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=52852&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=52852&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=52852&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=52852&r=mysqlcfg