Bug->Doc #52852 [Opn->Asn]: array_merge modifies numerical keys even if non-numerical

Edit report at http://bugs.php.net/bug.php?id=52852&edit=1 ID: 52852 Updated by: aharvey@php.net Reported by: fh-phpbug2 at fholzhauer dot de Summary: array_merge modifies numerical keys even if non-numerical -Status: Open +Status: Assigned -Type: Bug +Type: Documentation Problem Package: Documentation problem Operating System: osx PHP Version: 5.3.3 -Assigned To: +Assigned To: aharvey Block user comment: N New Comment: Definitely a documentation issue; in fact, there's an example on the same manual page that shows the same behaviour as your test script! Previous Comments: ------------------------------------------------------------------------ [2010-09-15 12:15:41] fh-phpbug2 at fholzhauer dot de 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 this bug report at http://bugs.php.net/bug.php?id=52852&edit=1