Regular Expressions 101

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Community Patterns

-2

IsEmailValid()

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 10 years ago
-2

I need some one to generate an regexp please

ECMAScript (JavaScript)
I need regular expression for the string WC_AUTHENTICATION_1343459084. Here WC_AUTHENTICATION_ remains fixed and the number keeps changing. I have written the below logic. var re = new RegExp('[; ]'+"WC_PERSISTENT"+'[0-9]'); Please help
Submitted by Sanuvimal.Mohan@target.com - 10 years ago
-2

,,,

PCRE (PHP <7.3)
,,,
Submitted by ,,, - 10 years ago
-2

Comma-separated numbers with ranges

ECMAScript (JavaScript)
no description available
Submitted by Eugene - 10 years ago
-2

Deleting everything except words starting with “#”

PCRE (PHP <7.3)
no description available
Submitted by A. K. Asik - 10 years ago
-2

A few Australian address parser

PCRE (PHP <7.3)
A few Australian address parser
Submitted by Dennis Deljouei - 10 years ago
-2

foo

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 10 years ago
-2

five word capture

Python
no description available
Submitted by anonymous - 10 years ago
-2

S3 log analysis

ECMAScript (JavaScript)
An updated S3 log analyzer. I found that my logs sometimes had strings quoted, so I needed to add possible handling for that.
Submitted by Matt Ingenthron <ingenthr@cep.net> - 10 years ago
-2

html check in spacial case

PCRE (PHP <7.3)
it check the html content with like html tag but not html. somthing this not html content but it has content like html tag.
Submitted by A. K. Asik - 10 years ago
-2

regex101

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 10 years ago
-2

match only words consisting of 3 repeated letters, e.g. lllkkk

Python
no description available
Submitted by kali - 10 years ago
-2

regex demo

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 10 years ago
-2

Test post by e-mail

PCRE (PHP <7.3)
Description here
Submitted by Arief - 10 years ago
-2

python bracketed text

Python
why doesn't this match text in brackets?
Submitted by anonymous - 10 years ago
-2

Name

PCRE (PHP <7.3)
no description available
Submitted by Alpha - 10 years ago
-2

Extract email client inserted "On <DATE>, <SENDER> wrote:"

PCRE (PHP <7.3)
Email clients add this line, call it "sender wrote" to reply emails.
Submitted by Vlad Burca - 10 years ago
-2

strip text enclosed in parentheses that does not match any keyword(s)

PCRE (PHP <7.3)
strip or remove parentheses enclosed text - including the parentheses itself - only if the enclosed text does not contain any of the FULL keyword(s). Leave all parentheses enclosed text if it contains any keyword(s) listed in the regex string. Uses negative lookahead and \b for determining word boun...
Submitted by marie bacuno - 10 years ago
-2

4 digit numeric w/o leading zero and no repeat digits

PCRE (PHP <7.3)
A pcre that capture a 4-digit numeric that does not allow a leading zero and no repeat digits.
Submitted by Jeff Thompson - 10 years ago
-2

SPLIT ADDRESS LINE INTO STREET NAME AND HOUSE NUMBER

PCRE (PHP <7.3)
This regular expression splits an address line like for example "1117 Franklin Blvd" into the street name and house number. It also supports addresses where street name and house number are the other way around (e.g. "Mustermannstr. 1"). Furthermore, this regular expression also supports address lin...
Submitted by Andre Wisplinghoff - 10 years ago
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Community Library Entry

0

Regular Expression
PCRE (PHP <7.3)

/
^(?!(192\.168\.))^(?!(172\.(1[6-9]|2[0-9]|3[0-1])\.))^((([1-9]|1[1-9]|[2-9][0-9]|1[0-9]{2}|2[0-1][0-9]|22[0-3])\.)((0|1[0-9]{0,2}|[2-9][0-9]|2[0-4][0-9]|25[0-5])\.){2}(1[0-9]{0,2}|[2-9][0-9]|2[0-4][0-9]|25[0-4]))$
/
gm
Open regex in editor

Description

Valid IP Octets include: 1-9 & 11-223, then 0-255, twice, then 1-254 but with no leading zeroes.

This will exclude the 10.0.0/8 private IP range, the reserved and multi-cast range, 224.0.0.0 and up, as well as the private IP ranges 172.16.0.0/12 and 192.168.0.0/16.

In other words, this will address all publicly accessible IPv4 addresses from 1.0.0.1 through 223.255.255.254.

Submitted by Schvenn - 9 years ago