--TEST-- Bug #42737 (preg_split('//u') triggers a E_NOTICE with newlines) --FILE-- <?php $string = chr(13).chr(10); $array = preg_split('//u', $string, - 1, PREG_SPLIT_NO_EMPTY); var_dump(array_map('ord', $array)); ?> --EXPECT-- array(2) { [0]=> int(13) [1]=> int(10) }