Bug #72622 [Opn->Csd]: array_walk + array_replace_recursive create references from nothing

Edit report at https://bugs.php.net/bug.php?id=72622&edit=1 ID: 72622 Updated by: laruence@php.net Reported by: srspam+phpnet at icloud dot com Summary: array_walk + array_replace_recursive create references from nothing -Status: Open +Status: Closed Type: Bug Package: Variables related Operating System: Linux PHP Version: 7.0.8 Block user comment: N Private report: N New Comment: Automatic comment on behalf of laruence@gmail.com Revision: http://git.php.net/?p=php-src.git;a=commit;h=3c3b8c8365dc9ac7d62034c9eecbabb4800b7353 Log: Fixed bug #72622 (array_walk + array_replace_recursive create references from nothing) Previous Comments: ------------------------------------------------------------------------ [2016-07-19 15:49:10] srspam+phpnet at icloud dot com Description: ------------ When an array has been passed to array_walk, with a callback that accepts the first value by reference, and the array is then passed as an argument to array_replace_recursive, an apparent reference is created for each element of the array, which then triggers bug #71241. The test script attached gives the correct output under php 5.6 and 5.5, but gives the wrong result under 7.0.8 Test script: --------------- <?php function walk (array $arr) { array_walk($arr, function (&$val, $name) { }); return $arr; } $arr3 = ['foo' => 'foo']; $arr4 = walk(['foo' => 'bar']); $arr5 = array_replace_recursive($arr3, $arr4); $arr5['foo'] = 'baz'; var_dump($arr3, $arr4, $arr5); Expected result: ---------------- array(1) { 'foo' => string(3) "foo" } array(1) { 'foo' => string(3) "bar" } array(1) { 'foo' => string(3) "baz" } Actual result: -------------- array(1) { ["foo"]=> string(3) "foo" } array(1) { ["foo"]=> &string(3) "baz" } array(1) { ["foo"]=> &string(3) "baz" } ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=72622&edit=1