Regular Expressions 101

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Community Patterns

1

IP4 Address Checker

Python
Allows exaclty 4 groups of digits in the range 0..255 seperated by . characters
Submitted by Steve (Gadget) Barnes - 9 years ago
1

Select Only Text Within Tags

PCRE (PHP <7.3)
no description available
Submitted by SMSVikasK - 9 years ago
1

Hashtag system

PCRE (PHP <7.3)
no description available
Submitted by bgrgndz - 9 years ago
1

Verbose Python IP4 Address

Python
Verbose IP4 simple address re N.B. You need to ensure that the re is in trebble quotes r""" .... """
Submitted by Steve (Gadget) Barnes - 9 years ago
1

Email regex

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
1

SCO

PCRE (PHP <7.3)
Match to any fastlane or rap station.
Submitted by John Morrow - 9 years ago
0

Payment process

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 9 years ago
1

Find 7-letter Palindromes

Python
Find 7 letter words that are spelled the same forwards as they are backwards.
Submitted by Christian Frost - 9 years ago
1

IPv4 and port (optional) validator

PCRE (PHP <7.3)
no description available
Submitted by co_Opernicus - 9 years ago
0

get lowercase letters

ECMAScript (JavaScript)
get lowercase letters
Submitted by jho - 9 years ago
0

Workspaces

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 9 years ago
0

Workspace case insensitive

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 9 years ago
1

IP network check (CIDR notation

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
1

Facebook Pages Preg

PCRE (PHP <7.3)
Retreive Facebook page liks
Submitted by Paul Dewar - 9 years ago
1

FL16.1

PCRE (PHP <7.3)
Task 16.1
Submitted by Dsavvinov - 9 years ago
1

My

PCRE (PHP <7.3)
My
Submitted by anonymous - 9 years ago
1

URL Validation

PCRE (PHP <7.3)
Simple URL Validation
Submitted by anonymous - 9 years ago
1

Delphi Servers -- BASE

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
1

find script

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
1

in_uniq codeigniter parse

PCRE (PHP <7.3)
no description available
Submitted by Ranielly Ferreira - 9 years ago
1...192193194195196...900

Community Library Entry

2

Regular Expression
PCRE2 (PHP >=7.3)

/
^(10(\.(1?\d\d?|2([0-4]\d?|5[0-5])))(?2)|172\.(1[6-9]|2\d|3[0-2])(?2)|192\.168(?2))(?2)$
/
gm
Open regex in editor

Description

Validate a given IP v4 address against all three defined Private IPv4 Subnets as statet in RFC1918

  • 10.0.0.0/8
  • 172.16.0.0/20
  • 192.168.0.0/16

Wikipedia Link RFC Link

Submitted by 0100101101001 - 3 years ago