Regular Expressions 101

Order By

Sponsors
There are currently no sponsors. Become a sponsor today!

Community Patterns

0

IPv4 and MAC addresses

PCRE (PHP <7.3)
Match tokens that are either IPv4 addresses or MAC addresses (three formats)
Submitted by anonymous - 6 years ago
0

IPTV Playlist

PCRE (PHP <7.3)
Get parts of an IPTV playlist
Submitted by anonymous - 5 years ago
0

Validate proper formating for a single short hostanme or DNS FQDN or IPv4 address

PCRE (PHP <7.3)
Accepts: Valid IPv4: 127.0.0.1 192.168.1.1 192.168.1.255 192.168.255.255...
Submitted by anonymous - 5 years ago
0

IPv4 address

ECMAScript (JavaScript)
IPv4 address RegExp.
Submitted by Sling - 4 years ago
0

Remove leading zeros (on the left) on ipv4 (ip v4)

ECMAScript (JavaScript)
Regex to remove leading (on the left) zeros on ipv4 (ip v4) Source: https://autohotkey.com/board/topic/15491-regex-to-strip-leading-zeroes-out-of-an-ip-address-octet/
Submitted by YMP - 4 years ago
0

IPv4 address from text

Python
Found in here, stackoverflow url.
Submitted by anonymous - 4 years ago
0

ip_adress_ping_regex

Python
link to ip_regex
Submitted by anonymous - 4 years ago
0

PCRE2 ipv6

PCRE2 (PHP >=7.3)
Some cases of ipv6 at string begin
Submitted by anonymous - 4 years ago
0

IPv4 non zero first and last octet

PCRE2 (PHP >=7.3)
When validating an IPv4 address I often have to reject devices that the first and last octet are 0.
Submitted by John Cutburth - 4 years ago
0

IPv4 Address +/- CIDR Slash Notation

Python
Grabs an IPv4 address, and if it has a CIDR slash notation, then grab that too.
Submitted by dboyd42 - 4 years ago (Last modified 2 years ago)
0

IPv6

PCRE2 (PHP >=7.3)
small ipv6 regex
Submitted by anonymous - 3 years ago
0

ipv4

PCRE2 (PHP >=7.3)
Find ipv4 addresses
Submitted by anon - 3 years ago
0

ipv4

ECMAScript (JavaScript)
IPv4 string check in JavaScript RegEx
Submitted by clarkttfu@gmail.com - 3 years ago
0

IPV4 Grabber

PCRE2 (PHP >=7.3)
This expression grabs any IPV4 address from any text, any time, anywhere. Hopefully.
Submitted by Ricardo Chica - 3 years ago (Last modified 3 years ago)
0

Procurar por IPv4

Python
Match em um IPv4 válido
Submitted by anonymous - 3 years ago
0

ipv4 match

PCRE2 (PHP >=7.3)
ipv4 match
Submitted by anonymous - 3 years ago
0

Ipv4 with optional port

.NET 7.0 (C#)
ipv4 with optional port
Submitted by anonymous - 3 years ago
0

IPv4 input field validator

PCRE (PHP <7.3)
Use It for partial/complete IPv4 address input text checking. OK examples: 19 / 192. / 192.168.1 / 192.168.1.1 / 0.0.0.0 KO examples: 1A / 01 / 192.168..1
Submitted by José Luis García Morillo - 3 years ago
0

IPv4 w/ w/o port validation and localhost string supported

PCRE (PHP <7.3)
IPv4 w/ w/o port validation and localhost string supported
Submitted by anonymous - 3 years ago
0

IP Table Parse IPID

.NET 7.0 (C#)
Match 1 is the IPID
Submitted by Tres Little - 3 years ago
1...678910...13