Regular Expressions 101

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Community Patterns

1

A revised e-mail validation regular expression

PCRE (PHP <7.3)
This one allows to begin with a digit, however, sometimes e-mail should begin with an *English letter *
Submitted by anonymous - 8 years ago
1

Date checker for X values

ECMAScript (JavaScript)
Work in progress
Submitted by anonymous - 8 years ago
1

Youtube ID Extractor

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 8 years ago
1

Telegram bot deep linking

PCRE (PHP <7.3)
Telegram bot deep linking Telegram bots have a deep linking mechanism, that allows for passing additional parameters to the bot on startup. It could be a command that launches the bot — or an auth token to connect the user's Telegram account to their account on some external service. ...
Submitted by SadeghPM@gmail.com - 8 years ago
1

Phone numbers and/or extensions(relaxed)

ECMAScript (JavaScript)
Useful for phone number extraction
Submitted by hslayer - 7 years ago
1

Localhost/private ip origin check

PCRE (PHP <7.3)
Used by CORS to check for localhost/private IP origins Check out the unit tests at /r/2Ofume/1/tests
Submitted by ngokimphu - 7 years ago
1

Formatar CPF

PCRE (PHP <7.3)
Retorna um cpf no formato 123.456.789-11. Cpf de entrada deve conter apenas números
Submitted by anonymous - 7 years ago
1

Matching email addresses per RFC5322

PCRE (PHP <7.3)
The BNF rules from RFC 5322 transformed to PCRE by Nikita Popov and described in the post http://nikic.github.io/2012/06/15/The-true-power-of-regular-expressions.html.
Submitted by Michael Musson - 7 years ago
1

Word Wrap examples

PCRE2 (PHP >=7.3)
Four examples of word wrapping at the 80 character mark, each one taking fewer steps than the last. Comment and uncomment lines with # to see the difference between versions. Optimization discussions welcome!
Submitted by OnlineCop - 7 years ago (Last modified a year ago)
1

Matching an Saudi Postal Code

PCRE (PHP <7.3)
Saudi Postal Code has five digits, if you would to have more information check the below: +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ First Digit (Postal Regions): "The postal region number is represented by the first digit of the postal code" ...
Submitted by Fares Alarabi - 7 years ago
1

Email matching with a grain of salt

PCRE (PHP <7.3)
Inspired by Micheal Musson entry Wich was hard to use in regex flavours that don't support recursion (C# engine doesn't) i've build my own simpler version wich matches what i would accept as validation entry
Submitted by Luigi Trabacchin - 7 years ago
1

Basic DOI

Python
no description available
Submitted by anonymous - 7 years ago
1

ethereum address

PCRE (PHP <7.3)
Check validity of ethereum address
Submitted by CorentinGC - 7 years ago
1

Contraseña Fuerte

PCRE (PHP <7.3)
Valida que la contraseña deba estar compuesta por una mayúscula, minúscula y números con un rango de caracteres desde 8 hasta 16 dígitos. Ejemplo Aropd123 Argpd 123
Submitted by Nelson Wandurraga - 7 years ago
1

Unix ANSI escape codes

PCRE (PHP <7.3)
Unix ANSI escape codes Hi , in my Terminal project in want a method to find (Unix ANSI escape codes) and run its command. For More information : https://en.wikipedia.org/wiki/ANSI_escape_code...
Submitted by Shahin Pendar , shahinpendar@gmail.com - 7 years ago
1

Check list of integers numbers separated by comma

PCRE (PHP <7.3)
Check list of integers numbers separated by comma Ex: "1, 2, 4, 6" >> OK "99" >> OK "a, b, c" >> WRONG...
Submitted by anonymous - 7 years ago
1

French Phone Number Validation

PCRE (PHP <7.3)
Accept several kind of format, more or less usual. And refuse incorrect formats. Prefix: 0033 / +33 / (0) / 0 Number: collapsed / group by 2 / group by 3 Separator: space / dot / dash
Submitted by RonanKER - 7 years ago
1

Validate and decompose email address (English alphabet compliant)

PCRE (PHP <7.3)
If you understand the regexp, you can adjust it to your need. restrict special characters to .%_'- (localpart) limit length of each part and the whole to reasonable size supports 'XN' tld If you need help, read http://www.regular-expressions.info/email.html See also https://www.debuggex.com/r/9cdaaw...
Submitted by RonanKER - 7 years ago
1

Capture the last space in a line of text with Negative Lookback

PCRE (PHP <7.3)
Looks for the last single space in a line of text.
Submitted by anonymous - 7 years ago
1

Acts

PCRE (PHP <7.3)
Extract Act names from statements
Submitted by anonymous - 7 years ago
1...275276277278279...902

Community Library Entry

1

Regular Expression
PCRE (PHP <7.3)

/
^\/start ([a-zA-Z0-9_-]{1,64})$
/
g
Open regex in editor

Description

Telegram bot deep linking

Telegram bots have a deep linking mechanism, that allows for passing additional parameters to the bot on startup. It could be a command that launches the bot — or an auth token to connect the user's Telegram account to their account on some external service.

Each bot has a link that opens a conversation with it in Telegram — https://telegram.me/<bot username>

You can add the parameters start or startgroup to this link, with values up to 64 characters long. For example: https://telegram.me/triviabot?startgroup=test

A-Z, a-z, 0-9, _ and - are allowed. your bot will receive a message from that user in this format: /start PAYLOAD

Submitted by SadeghPM@gmail.com - 8 years ago