Python Regex vs PHP Regex

(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)

127.255.0.0

re.findall(regex, string)
preg_match_all($regex, $string, $matches);

>>> re.match(r'(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)', '127.255.0.0').groups()
('127', '255', '0', '0')

def valid_ip(s):
    m = re.match(r"(d+).(d+).(d+).(d+)$", s)
    if m is None:
        return False
    parts = [int(m.group(1+x)) for x in range(4)]
    if max(parts) > 255:
        return False
    return True

r'(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)'

>>> import re
>>> x = re.compile(r'(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|'
... r'2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9]'
... r'[0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)')
>>> x.match("127.0.0.1")
<_sre.SRE_Match object at 0x5a8860>
>>> x.match("127.255.0.1")
<_sre.SRE_Match object at 0x5a8910>
>>> x.match("127.255.0.0")
<_sre.SRE_Match object at 0x5a8860>