Regular Expressions 101

Expresion regular para generar identificadores

Пример: "йцу йцу " - рабочий Пример: "йцу йцу " - не рабочий

Пример: "+79069999999 " - рабочий Пример: "+79069999999 " - не рабочий

There are 4 capture groups: 1: domain name 2: TTL (how long until the record expires) 3: TYPE (the type of DNS record) 4: CONTENT (the content of the DNS record. This depends on the type) ...

// SPDX-License-Identifier: LGPL-3.0-only // Created By: Art Blocks Inc. pragma solidity ^0.8.0; /**...

Regex expression to make abbreviation starts with "@", "/" available in Emacs.

Regular expression for a mexican phone format.

/$ repo sync -c -j8/gm

Matches zero followed by decimal separator followed by a group of three options: hundreds above 0.857 0.800 + tenths above 0.056 0.850 + units above 0.056

Matches zero followed by decimal separator followed by a group of three options: hundreds below 0.857 0.800 + tenths below 0.057 0.850 + units below 0.007

Valid Syntax: 1 23.5 -13.2 -3.5e-23 false...

This regex detects Malaysia MyKad ID with - in the date part of the ID.

Validate dates in the YMD format

Iran mobile number regex This pattern is designed to validate Iranian mobile phone numbers written in either domestic or international format. It recognizes optional prefixes like 0, +98, 0098, or 98, followed by a 10-digit number starting with 9 — which is the standard format for all mobile number...

Core principles Covers ~99% of practical use cases Returns exactly 2 capturing groups (username and domain) Balances between RFC 5322 compliance and practicality ✅ Accepts:...

This regex validates dates in YYYY-MM-DD format with comprehensive rules: Year: Must be greater than 1900 (1901-9999) Month: Valid range 01-12 Day: Validates correct number of days per month: 31 days: January, March, May, July, August, October, December...

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!

The is helpful for parsing the symbolic reference of a PHP class object for validation or just determining the type and target for the operator. The expression is intended for working with classes and class methods, so the value on the right of the Paamayim Nekudotayim :: will alway be regarded as ...