Regular Expressions 101

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Community Patterns

1

OpenSSL certificates ASCII match all in chain

PCRE (PHP <7.3)
Match all certificate in a chain from a OpenSSL s_client output. Need for this come from a script that should be able to verify the root CA of a URL.
Submitted by Evgeni Simeonov - 9 years ago
1

Valida RFC mexicano

PCRE (PHP <7.3)
valida el formato del registro federal de contribuyentes de México.
Submitted by Rogelio - 9 years ago
1

Search regex

PCRE (PHP <7.3)
/** 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 b...
Submitted by warnock - 9 years ago
1

Email Validator

Python
Email validator from http://haacked.com/archive/2007/08/21/i-knew-how-to-validate-an-email-address-until-i.aspx/
Submitted by anonymous - 9 years ago
1

count occurence of comma

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

text beetween <<>>

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

exemplo-flex-2

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

starts with abc, has 123 and ends with xyz

PCRE (PHP <7.3)
#starts with abc, has 123 and ends with xyz abc123xyz
Submitted by Kifah - 9 years ago
1

Cartão de cidadão / BI

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

10 digits

ECMAScript (JavaScript)
10 digits
Submitted by anonymous - 9 years ago
1

UID

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

Password validation

PCRE (PHP <7.3)
Check if the string has a minimum of 6 characters, at least 1 upper case char, at least 1 lower case char and at least 1 number with no spaces.
Submitted by Webchef.de - 9 years ago
1

geolocation coordinates string

PCRE (PHP <7.3)
Matches a geolocation coordinates string consisting of latitude and longitude separated by a comma with up to 7 decimal places precision.
Submitted by Steve Piercy - 9 years ago
1

UK Postcode checker

Python
Matches more thoroughly than others in the library. Based on http://stackoverflow.com/questions/164979/uk-postcode-regex-comprehensive. Matches: W1A 1AA, WC2H 7LT, SE50EG
Submitted by spookypeanut - 9 years ago
1

Oracle Stored Procedure Name Validator

ECMAScript (JavaScript)
Validates valid Oracle Stored Procedure names
Submitted by anonymous - 9 years ago
1

Smoke Detector Regex

Python
Parses Smokey messages
Submitted by Eyeballcode - 9 years ago
1

Capture if pattern NOT found

PCRE (PHP <7.3)
Capture the input if the pattern is NOT found
Submitted by Byron Jones - 9 years ago
1

replace comma's between quoted text in csv

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

Change Table names

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

Words with only one spacing

PCRE (PHP <7.3)
Names with only one spacing allowed in between words.
Submitted by Pavan Kataria - 9 years ago
1...840841842843844...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