69
74
$key = pack($pack, $algo($key));
73
78
$ipad = (substr($key, 0, 64) ^ str_repeat(chr(0x36), 64));
74
79
$opad = (substr($key, 0, 64) ^ str_repeat(chr(0x5C), 64));
81
89
function mb_substr( $str, $start, $length=null, $encoding=null ) {
82
90
return _mb_substr($str, $start, $length, $encoding);