Regular Expressions 101

Community Library Entry

3

Regular Expression
PCRE (PHP <7.3)

/
^(?<protocol>[a-z]{2,6}):\/\/((?<subdomain>[a-z0-9]{0,10}\.{1}){0,2}(?<domain>[a-z\-0-9]{1,30}){1}\.{1}(?<extension>[a-z]{1,10}){1}|(?<ipaddress>([0-9\.]{2,5}){3,8}))(?<port>\:[0-9]{1,6}){0,1}\/?(?<filepath>(?<path>[a-z0-9\-_%]{1,20}\/{1}){0,}(?<filename>[a-z0-9\-_]{1,20}\.{1}[a-z0-9]{2,6}){0,1}){0,1}(?<route>(\/{1}[a-z_0-9\-_]{1,20}){1,}){0,10}(?<query>\?{1}[a-z0-9%\+_\-&=\.@\!,\:]{0,200}){0,1}$
/
igm

Description

Finds the protocol, subdomain, ((domain, extension)/ipaddress), port, filepath (split in path and filename), the route and the query string.

Submitted by fps - 10 years ago