Regular Expressions 101

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Community Patterns

1

Year regexp

PCRE (PHP <7.3)
regexp for year filtering
Submitted by anonymous - 9 years ago
7

Date validation

ECMAScript (JavaScript)
Besides leap year handling, this takes care of date validation in the yy-mm-dd format.
Submitted by anonymous - 9 years ago
0

IP V4 with leading zero values

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

Extract jsfiddle links

PCRE (PHP <7.3)
Extract jsfiddle links
Submitted by Shrinivas Shukla - 9 years ago
0

Registration Email Address

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

url and path match with or without http|https

PCRE (PHP <7.3)
this is the most perfect pattern I reach for url with query or anchor
Submitted by Gehad Mohamed - 9 years ago
1

Po box addresses

ECMAScript (JavaScript)
exludes all address with po box
Submitted by paulo.castro48@gmail.com - 9 years ago
4

url

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

Single lone digits

PCRE (PHP <7.3)
Find single digits that are not part of an integer. For example, "27" should not match, but "27.1" will match the "1". "27.11" won't match.
Submitted by Conan Dombroski - 9 years ago
0

/[a-f0-9]{8}(?:-[a-f0-9]{4}){3}-[a-f0-9]{12}

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

Match HTTP error code

Python
no description available
Submitted by anonymous - 9 years ago
2

python:S117

PCRE (PHP <7.3)
Local variable and function parameter names should comply with a naming convention
Submitted by anonymous - 9 years ago
0

Nickname

PCRE (PHP <7.3)
Nickname validation. Only: letters _ One line. Tested with RoR
Submitted by Paramoshkin Andrew - 9 years ago
0

add colon between hours and minutes to time (24h system)

PCRE (PHP <7.3)
This expression converts any 3- or 4 digit timevalue to a value with colon between hours and minutes. So 345 is converted to 3:45 and 1500 is converted to 15:00
Submitted by Patrick Sinke - 9 years ago
0

Facebook url regex

PCRE (PHP <7.3)
no description available
Submitted by Devs Devaras - 9 years ago
-3

Facebook url regex

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

ServiceNow - Retrieve text from an Email

ECMAScript (JavaScript)
retrieve multiple lines from an email body.
Submitted by Evan Williams - 9 years ago
0

Phone validate

ECMAScript (JavaScript)
Validate Phone number even if contain country code
Submitted by Jorge Cervantes - 9 years ago
1

tag searching

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

require, require_once, include, include_once search

PCRE (PHP <7.3)
no description available
Submitted by zooli - 9 years ago
1...823824825826827...900

Community Library Entry

2

Regular Expression
PCRE (PHP <7.3)

/
^[a-z_][_a-zA-Z0-9]{2,30}$
/
Open regex in editor

Description

Local variable and function parameter names should comply with a naming convention

Submitted by anonymous - 9 years ago