Regular Expressions 101

Order By

Sponsors

Community Patterns

16

http url regex

ECMAScript (JavaScript)
general purpose HTTP URL regex
Submitted by Miguel Castillo @manchagnu - 9 years ago
18

Email validation

PCRE (PHP <7.3)
no description available
Submitted by tutsplus.com - 10 years ago
16

Password

ECMAScript (JavaScript)
Safe Password that allow only with a number, a lowercase, a uppercase, and a special character
Submitted by davidlondono - 9 years ago
16

Alphanumeric Regex

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

domain - host

Python
no description available
Submitted by anonymous - 9 years ago
13

regex101.com id grabber

PCRE (PHP <7.3)
grabs the ID for the regex101.com permalink to code
Submitted by chris mccoy - 10 years ago
6

ID003 device info

PCRE (PHP <7.3)
no description available
Submitted by sasjaq - 10 years ago
6

Validate Birth Date (d/m/Y)

PCRE (PHP <7.3)
From 1970 to 2015 Replace: (\d{4})$ for (19[7-9]\d|200-1)$
Submitted by Valdeir Santana - 8 years ago
14

Phone Number

ECMAScript (JavaScript)
Allows phone numbers with optional country code, optional special characters and whitespace
Submitted by Tlmader - 9 years ago
13

URL Validator

PCRE (PHP <7.3)
Validates - URLs with schemes - http, https and ftp Relative URL starting with / and ../
Submitted by anonymous - 10 years ago
8

Alphanumeric and Spaces

PCRE (PHP <7.3)
Alow alphanumeric characters and spaces
Submitted by JTN - 9 years ago (Last modified 9 months ago)
11

Date(Including Leap Year) YYYY-MM-DD hh:mm:ss

PCRE (PHP <7.3)
Validates DateTime of format YYYY-MM-DD hh:mm:ss including Leap Year
Submitted by Madhan - 10 years ago
8

Date time Advanced

PCRE (PHP <7.3)
no description available
Submitted by Mr.Neutro - 10 years ago
7

PAN CARD validation

PCRE (PHP <7.3)
checks for valid PAN card for Indian users.
Submitted by karan thakkar - 10 years ago
6

Repair unquoted HTML attribute values

PCRE (PHP <7.3)
Usually MSWord HTML exports
Submitted by Ka. - 11 years ago
6

Password

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 10 years ago (Last modified 9 months ago)
5

parsing CSV file

PCRE (PHP <7.3)
It correctly handles simple values, empty values, and quoted values with commas inside.
Submitted by Viktor Lova aka nsinreal - 9 years ago
5

Latitude,Longitude fetcher

PCRE (PHP <7.3)
Useful to work with GoogleMap API.
Submitted by anonymous - 9 years ago
5

Password strength

ECMAScript (JavaScript)
Regular expression for password validation Rules: 8-120 chars no spaces must contain at least one a-z char must contain at least one A-Z char...
Submitted by @razvanz - 9 years ago
5

ipv6

PCRE (PHP <7.3)
Match an ipv6 address
Submitted by Frusty - 8 years ago
1...678910...879

Javascript HTTP URL Validation

0

Regular Expression
PCRE2 (PHP >=7.3)

/
^(http(s)?:\/\/.)?(www\.)?[-a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&\/\/=]*)$
/
gm
Open regex in editor

Description

Use to validate basic website URLs with or without http://. I took bits and pieces of other regexes I found and compiled into one that worked well for my purposes.

Submitted by Daniel Ecker - a year ago