Regular Expressions 101

Community Patterns

IP Validation

1

Regular Expression
PCRE (PHP <7.3)

/
^(?:(?:[01]?\d?\d|2[0-4]\d|25[0-5])\.){3}(?:(?:[01]?\d?\d|2[0-4]\d|25[0-5]))
/
img

Description

Validate IP v4

Submitted by anonymous - 8 years ago