Regular Expressions 101

Order By

Sponsors
There are currently no sponsors. Become a sponsor today!

Community Patterns

1

Phone numbers - Poland

PCRE (PHP <7.3)
Validates following phone number schemes: 1234567 123-45-67 12-34-578 711234567 0711234567...
Submitted by Forseti - 9 years ago
1

Email validation

PCRE (PHP <7.3)
Usernames with dots, dashes and underscores. Hostnames limited to 64 chars, dash disallowed at first char of domain segment, only one consecutive dash or dot, one-char domains possible, multi-subdomains, long TLDs.
Submitted by Forseti - 9 years ago
1

Names with hyphens or single quotes

PCRE (PHP <7.3)
Names that accept maximum of 1 hyphen or 1 Quote, does not allow white spaces, allows an unlimited length of name.
Submitted by chakra_tavy - 9 years ago
1

ofsream open file C++

Python
match of.open("test.txt");
Submitted by Денис суховерхов - 9 years ago
1

Extract variable data from multi-line text columns

PCRE (PHP <7.3)
Pulls data from the 3rd line of different columns of text.
Submitted by Jan from StackOverflow, and John Kimball - 9 years ago
1

Dutch postcode validation

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
1

Credit Card Regex

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
1

replace divs

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
1

MAC address capturing

Python
Captures MAC addressess in any format: aa bb cc dd ee ff aa-bb-cc-dd-ee-ff aa:bb:cc:dd:ee:ff aabb.ccdd.eeff aabbccddeeff
Submitted by Gilian - 9 years ago
1

file name without extension

PCRE (PHP <7.3)
no description available
Submitted by sl - 9 years ago
1

Brazilian Phone number

ECMAScript (JavaScript)
With optional 9 digit
Submitted by Matheus Gambati - 9 years ago
1

Isolate string in double or single quotes

PCRE (PHP <7.3)
Isolate strings inside double or single quotes
Submitted by garsax - 9 years ago
1

10-digit phone number with hyphens

PCRE (PHP <7.3)
Such as 333-333-1234. Does not test for valid sequences of digits. E.g. 000-000-0000 would pass.
Submitted by anonymous - 9 years ago
1

Tag Text

Python
Match text between html tags
Submitted by Si - 9 years ago
1

URL does not start with correct name

PCRE (PHP <7.3)
APPFW BLock URL
Submitted by anonymous - 9 years ago
1

Find multiline links a HTML tag

Python
Find multiline links a HTML tag
Submitted by CyberLight - 9 years ago
1

find file name with file extension

PCRE (PHP <7.3)
find file name with file extension
Submitted by rainyseason - 9 years ago
1

Find untranslated strings, angular

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 9 years ago
1

Decimal Numbers (+/-)

PCRE (PHP <7.3)
no description available
Submitted by Zain - 9 years ago
1

regular expression to match word starting with space

Python
no description available
Submitted by anonymous - 9 years ago
1...842843844845846...900

Community Library Entry

1

Regular Expression
PCRE (PHP <7.3)

/
^(?:[1-9]|0(?!0{4}))\d{4}(?:[-\s]\d{4})?$
/
ig
Open regex in editor

Description

Validation rule:

  • not empty
  • numeric only
  • allow "XXXXX", "XXXXX XXXX", or "XXXXX-XXXX"
  • first 5 digits cannot be "00000" (so "00000", "00000 XXXX" and "00000-XXXX" will be regected)
Submitted by Zheyang Song - 9 years ago