IPv4 RegEx in PHP is not matching the IPs with last octet being 3 digit -

i have regex ** **

i using preg_match_all method in php match ips. doesn't match ip if last octet 3 digits. plz can me , let me know going wrong.

code like:

$tnlip_regex = "/(([1-9]?\d|1\d\d|2[0-4]\d|25[0-5])[\.])(([1-9]?\d|1\d\d|2[0-4]\d|25[0-5])[\.])(([1-9]?\d|1\d\d|2[0-4]\d|25[0-5])[\.])(([1-9]?\d|1\d\d|2[0-4]\d|25[0-5]))/"; preg_match_all($tnlip_regex, $row_data, $tnlip_matches); 

$row_data data finding ips. $tnlip_matches array putting them.

your regexp looks wrong follows-

you need this-

^([0-9]|[1-9][0-9]|(1[0-9]{2}|2[0-5]{2}))\.([0-9]|[1-9][0-9]|(1[0-9]{2}|2[0-5]{2}))\.([0-9]|[1-9][0-9]|(1[0-9]{2}|2[0-5]{2}))$ 

you can test validity of ip address using rule here : debuggex demo