Regular Expressions 101

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Regular Expressions 101

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-2
javascript

SQL Injection

SQL injection regEx pattern
Submitted by Darshan Patil - 7 years ago
-2
javascript

search all special characters

no description available
Submitted by rlynjb - 7 years ago
-2
pcre

email

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 - 7 years ago
-2
javascript

Name/Surname

Regex to constrain a text to have at least 2 strings. Compatible with 2nd-3rd-Nth names/surnames.
Submitted by BigL - 7 years ago
-2
javascript

Valid Email

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 - 7 years ago
-2
javascript

Roman numbers

This regex matches roman numbers from 1 (I) to 3999 (MMMCMXCIX)
Submitted by Nicolò Ribaudo - 7 years ago
-2
pcre

float

matches 123.4f 123.4F .4f .4F 5f 5F
Submitted by Mateusz Paluch - 7 years ago
-2
pcre

boolean

Value must be either true or false
Submitted by nstaal - 7 years ago
-2
javascript

Multiple Email Address Validation

Validates Multiple email addresses seperated by comma.
Submitted by Rajesh Badam - 7 years ago
-2
javascript

Validating comma delimited strings for whitespaces & extra commas

Validating comma delimited strings for whitespaces & extra commas -- +(,()+){0,}
Submitted by Cyril Mathew - 7 years ago
-2
pcre

Simple Username Pattern

a simple username pattern
Submitted by Saeed Tabrizi - 7 years ago
-2
pcre

DOTNET

no description available
Submitted by anonymous - 7 years ago
-2
pcre

Get begining of url (subdomain)

In between 2 delimiters
Submitted by anonymous - 7 years ago
-2
pcre

Parse all simple math expressions (decimals, whole, negative)

-2.02^3(2+3.024)+3.14159-(45^23)/(19-4)
Submitted by anonymous - 7 years ago
-2
pcre

Get the HTML table tag and all content from within

no description available
Submitted by Pedro Marcelo de Sá Alves - 7 years ago
-2
pcre

Quizzes Feedpager – XML

Matches the XML pages of the /quizzes routes for feedpager
Submitted by anonymous - a year ago
-2
javascript

Match whitespace and colon, except in specific words

For string splitting / deconstructing
Submitted by anonymous - 8 months ago
-3
pcre

Browser regex

no description available
Submitted by anonymous - 10 years ago
-3
pcre

test2

no description available
Submitted by anonymous - 9 years ago
-3
pcre

Date with this format YYYY-MM-DD and year start 20 or 21

Date with this format YYYY-MM-DD and year start 20 or 21 like 2014
Submitted by cisc0 - 9 years ago
1...638639640641642643644645

match valid JSON

Vote

26

Regular Expression
pcre

/
(?(DEFINE) # Note that everything is atomic, JSON does not need backtracking if it's valid # and this prevents catastrophic backtracking (?<json>(?>\s*(?&object)\s*|\s*(?&array)\s*)) (?<object>(?>\{\s*(?>(?&pair)(?>\s*,\s*(?&pair))*)?\s*\})) (?<pair>(?>(?&STRING)\s*:\s*(?&value))) (?<array>(?>\[\s*(?>(?&value)(?>\s*,\s*(?&value))*)?\s*\])) (?<value>(?>true|false|null|(?&STRING)|(?&NUMBER)|(?&object)|(?&array))) (?<STRING>(?>"(?>\\(?>["\\\/bfnrt]|u[a-fA-F0-9]{4})|[^"\\\0-\x1F\x7F]+)*")) (?<NUMBER>(?>-?(?>0|[1-9][0-9]*)(?>\.[0-9]+)?(?>[eE][+-]?[0-9]+)?)) ) \A(?&json)\z
/
x
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Description

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Submitted by Mateon1 - 8 years ago