Regular Expressions 101

Community Patterns

IPv4 address

0

Regular Expression
PCRE (PHP <7.3)

/
^(([01]?[0-9]?[0-9]|2[0-5][0-5])\.){3}([01]?[0-9]?[0-9]|2[0-5][0-5])$
/
g

Description

matches valid ipv4 addresses

Submitted by anonymous - 7 years ago