--TEST-- Bug #36148 (unpack("H*hex", $data) is adding an extra character to the end of the string) --FILE-- <?php $values = array("a", "aa", "aaa", "aaaa"); foreach ($values as $value) { $a = pack("H*", $value); $b = unpack("H*", $a); echo $value.": "; var_dump($b); } ?> --EXPECT-- a: array(1) { [1]=> string(2) "a0" } aa: array(1) { [1]=> string(2) "aa" } aaa: array(1) { [1]=> string(4) "aaa0" } aaaa: array(1) { [1]=> string(4) "aaaa" }