Regular Expressions 101

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Community Patterns

-2

xml_kv_extraction

PCRE (PHP <7.3)
Basic XML key-value extraction
Submitted by Keith Muggleton - 9 years ago
-2

march html tag

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
-2

Camelize JSON

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
-2

Substitute text between brackets

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
-2

French phone attempt

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
-2

Brazillian Telephone Number validator

PCRE (PHP <7.3)
A basic validator for BR phone numbers
Submitted by Yemolai - 9 years ago
-2

Find labels without preferredMaxLayoutWidth and multiple lines in Appl

PCRE (PHP <7.3)
Allows to find label generating warnings like "Automatic Preferred Max Layout Width before iOS 8.0" in XCode
Submitted by Alessio Anesa - 9 years ago
-2

remove eval(base64_decode( ));

PCRE (PHP <7.3)
\seval\(base64_decode\(?\)\);
Submitted by manish kumar - 9 years ago
-2

SQL Injection

ECMAScript (JavaScript)
SQL injection regEx pattern
Submitted by Darshan Patil - 9 years ago
-2

search all special characters

ECMAScript (JavaScript)
no description available
Submitted by rlynjb - 9 years ago
-2

email

PCRE (PHP <7.3)
matches normal email addresses like example@gmail.com but also addresses with ip addresses like example@192.168.0.34 (not ipv6)
Submitted by Adrian Kühni - 9 years ago
-2

Name/Surname

ECMAScript (JavaScript)
Regex to constrain a text to have at least 2 strings. Compatible with 2nd-3rd-Nth names/surnames.
Submitted by BigL - 9 years ago
-2

Valid Email

ECMAScript (JavaScript)
Use this Regex for server-side validation also with some slight modifications like so for .NET -- @\w+([-+.']\w+)@\w+([-.]\w+)\.[a-zA-Z0-9]{2,6}(-.{2,6})*;
Submitted by Fred Scales - 9 years ago
-2

Roman numbers

ECMAScript (JavaScript)
This regex matches roman numbers from 1 (I) to 3999 (MMMCMXCIX)
Submitted by Nicolò Ribaudo - 9 years ago
-2

float

PCRE (PHP <7.3)
matches 123.4f 123.4F .4f .4F 5f 5F
Submitted by Mateusz Paluch - 9 years ago
-2

boolean

PCRE (PHP <7.3)
Value must be either true or false
Submitted by nstaal - 9 years ago
-2

match commas between sets or members, but not inside members.

Python
matches only those commas that are between sets, or between members of a set. does not match commas that are inside members.
Submitted by Amrit Kohli - 9 years ago
-2

Multiple Email Address Validation

ECMAScript (JavaScript)
Validates Multiple email addresses seperated by comma.
Submitted by Rajesh Badam - 9 years ago
-2

Between two strings

Python
Awesome explanation of nested lookbacks
Submitted by OnlineCop - 9 years ago
-2

Validating comma delimited strings for whitespaces & extra commas

ECMAScript (JavaScript)
Validating comma delimited strings for whitespaces & extra commas -- +(,()+){0,}
Submitted by Cyril Mathew - 9 years ago
1...7891011...900

Community Library Entry

1

Regular Expression
Java 8

"
(?<type>text|font|model|audio|image|video|application|message|multipart) \/ ( (?<tree>[-_0-9a-z\.]+\.)? (?<subtree>[-_0-9a-z]+)* ) (\+ (?<suffix>[-_a-z0-9]+) )? (?<parameters>;\s* (?<parameter>(?<param>[-a-z0-9]+)\s*=\s*(?<value>[-a-z0-9]+)) )*
"
ixg
Open regex in editor

Description

Parses an IANA Media Type value.

Doesn't seem to capture repeating parameters, which is a bit of an edge case but valid I think - any suggestions on how to fix would be appreciated.

Submitted by scottbdr - 9 months ago