--TEST-- Bug #69068: Exchanging array during array_walk -> memory errors --FILE-- <?php $array = [1, 2, 3]; array_walk($array, function($value, $key) { var_dump($value); if ($value == 2) { $GLOBALS['array'] = [4, 5]; } }); var_dump($array); ?> --EXPECT-- int(1) int(2) int(4) int(5) array(2) { [0]=> int(4) [1]=> int(5) }