Regular Expressions 101

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Community Patterns

1

Strong Password

PCRE (PHP <7.3)
1 digit 1 lower case 1 upper case 1 special character (no-space) 8-20 length
Submitted by Femi Fapohunda - 9 years ago
1

Regex SCript replace

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

Currency Detector Python

Python
Currency Detector for Python
Submitted by Joao Graca - 9 years ago
1

dd-mm-yyyy

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

RegEx - Exclude zero

PCRE (PHP <7.3)
RegEx - Exclude zero
Submitted by http://stackoverflow.com/questions/8910972/regex-exclude-zero - 9 years ago
1

Slovak phone number

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

Find Markdown links, but not image

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

anti-xss regex

ECMAScript (JavaScript)
this is a white list regex that invalidates input with "=
Submitted by Ivan Cai - 9 years ago (Last modified a year ago)
1

Indian mobile numbers

PCRE (PHP <7.3)
All indian mobile phone numbers are till now are in the format of +91-(789)(9-digits) or +91(789)(9-digits) or 0(789)(9-digits). those numbers which are come into this category is valid with this RegEx.
Submitted by N shoban babu - 9 years ago
1

whitespaces and positive numerics

ECMAScript (JavaScript)
//Accepts whitespaces and positive numeric values including integers and decimals(ortional) with 3 precisions only. //Ex: "999", "99999.999", " 999.999" -> ACCEPTABLE
Submitted by Pubudu (motustudio) - 9 years ago
1

Globality APP

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

Russian phone number validater

PCRE (PHP <7.3)
Russian phone number validater
Submitted by Russell of sitesoft - 9 years ago
1

https://www.facebook.com/video.php?v=1009222819122586

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

match start of line subsubsection

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

Match parenthesis

Python
Matches anything wrapped in parenthesis. Can handle nested and consecutive sets of parenthesis.
Submitted by Nic Roland - 9 years ago
1

parse table

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

Match pointless spaces in space separated list

ECMAScript (JavaScript)
'test' - no match 'test test' - no match ' test' - match (space at the start) 'test ' - match (space at the end) 'test test' - match (single space in the middle)
Submitted by J. Harry B. - 9 years ago
1

url regex

PCRE (PHP <7.3)
spoon library
Submitted by anonymous - 9 years ago
1

french phone number

PCRE (PHP <7.3)
french phone number
Submitted by lolo64 - 9 years ago
1

simple json key -value

PCRE (PHP <7.3)
simple json key -value parser
Submitted by ReMMeR - 9 years ago
1...842843844845846...902

Community Library Entry

1

Regular Expression
PCRE (PHP <7.3)

/
(\[(?:[^[\]]*?)\]\s*?(?=\[))|(\[(?:[^[\]]*?)\](?!\s*[\|&]\s*.))|(?:\[[^[\]]*?])|([^&\|\s]+)\s+(?=[^&\|\s]+)
/
g
Open regex in editor

Description

/**

  • this regex should match most cases where the user forgets to put an operator somewhere and add an OR, it still
  • does not handle nested square brackets but those are invalid anyways
  • this page has an explanation https://regex101.com/r/fF7wO1/2
  • the way this regex grabs conflicting matches is by oring different cases together in the order we want to grab them in
  • the first case is for a set of brackets immediately followed by an opening bracket (seperate them with an or)
  • the second case is for a set of brackets immediately followed by any non operator character (seperate with an or)
  • the third case is for a set of brackets followed by an operator (do nothing)
  • the final case is for two words outside of brackets seperated by a space (fill space with an or)
  • @type {RegExp} */
Submitted by warnock - 9 years ago