Regular Expressions 101

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Community Patterns

10

MikroTik FireWall

PCRE (PHP <7.3)
Regex used in Splunk to extract fields from Mikrotik FW. NOTES: Mikrotik must be configured to use "BSD Syslog" format FW rules must add, as log prefix, the action: drop accep...
Submitted by HappyIdeasMaker - 10 years ago
10

RFC 3987 compliant URL regex

ECMAScript (JavaScript)
This is a JavaScript port of the URL regex from http://stackoverflow.com/a/190405/384062 that includes a bug fix and some optimization. Mathias Bynens's Regenerate was used to convert unicode escapes. Bug fix: Eliminated stray | falsely allowing querystring to contain | ...
Submitted by Hans Meyer - 9 years ago
10

If-Then-Else Conditionals

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
10

money: either 0 or 2 dp

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 9 years ago
10

entity

Python
no description available
Submitted by anonymous - 9 years ago
10

Valid Telephone Number

ECMAScript (JavaScript)
This regex validates varying types of telephone numbers.
Submitted by Adam Recvlohe - 9 years ago
10

extract subdomain(if available) or domain from URL

Python
This regex should extract the subdomain, if any, or the domain, if no subdomain is used, from an arbitrary URL
Submitted by trevi@twanda.com - 9 years ago
11

Address Check Validation

PCRE (PHP <7.3)
Check for true or false street address format
Submitted by Dilip Borad - 11 years 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 - 11 years ago
11

UUID

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 10 years ago
11

html color match: transparent, #fff, #123456, rgb, rgba, hsl, hsla

ECMAScript (JavaScript)
This may be useful or not to test whether a given string is a valid (more or less) html color value. It matches color values such as: #123 - short hex color value #123456 - hex color value rgb(255,255,0) - rgb color value rgba(255,255,0,1.0) - rgba color value hsl(360,100%,100%) - hsl color value...
Submitted by grouch - 10 years ago
11

remove comments from php code

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 10 years ago
11

find all link(<a>) tags expect your links in href attribute

ECMAScript (JavaScript)
YourLink - not found AnotherLink - found
Submitted by KoT - 9 years ago
11

youtube url match

ECMAScript (JavaScript)
extract video id, index, play list id from youtube url
Submitted by anonymous - 9 years ago
11

Codice fiscale

PCRE (PHP <7.3)
Check "codice fiscale"
Submitted by Luca - 9 years ago
11

IPv4 Validator

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 4 years ago (Last modified a year ago)
11

Conventional Commits validation

Python
This regex prevents the writing of non-standard conventional commits. I'm available on my github
Submitted by Krisque - 3 years ago (Last modified 3 years ago)
12

Full name (Turkish)

ECMAScript (JavaScript)
Matches case insensitive first name, optional unlimited number of middle names and last name separated with space format. Replaced \w with explicit char range for Turkish support. (Äž accepted as first char not to over complex)
Submitted by CKK - 10 years ago
12

Find Reddit Threads

Python
Simply searches for the thread-id in any kind of valid reddit-URL.
Submitted by Mio - 10 years ago
12

Remove Special Ascii Characters from unicode String

PCRE (PHP <7.3)
By Using this string you can just remove ascii special characters from a unicode string characters like ♥♥♥♥ ▓▒ and other non unicode letters.
Submitted by Hummad Hassan - 10 years ago
1...896897898899900901

Community Library Entry

6

Regular Expression
PCRE (PHP <7.3)

/
\A\s* (?: ######################################################################### # Option A: [<Addition to address 1>] <House number> <Street name> # # [<Addition to address 2>] # ######################################################################### (?:(?P<A_Addition_to_address_1>.*?),\s*)? # Addition to address 1 (?:No\.\s*)? (?P<A_House_number_1>\pN+[a-zA-Z]?(?:\s*[-\/\pP]\s*\pN+[a-zA-Z]?)*) # House number \s*,?\s* (?P<A_Street_name_1>(?:[a-zA-Z]\s*|\pN\pL{2,}\s\pL)\S[^,#]*?(?<!\s)) # Street name \s*(?:(?:[,\/]|(?=\#))\s*(?!\s*No\.) (?P<A_Addition_to_address_2>(?!\s).*?))? # Addition to address 2 | ######################################################################### # Option B: [<Addition to address 1>] <Street name> <House number> # # [<Addition to address 2>] # ######################################################################### (?:(?P<B_Addition_to_address_1>.*?),\s*(?=.*[,\/]))? # Addition to address 1 (?!\s*No\.)(?P<B_Street_name>\S\s*\S(?:[^,#](?!\b\pN+\s))*?(?<!\s)) # Street name \s*[\/,]?\s*(?:\sNo\.)?\s+ (?P<B_House_number>\pN+\s*-?[a-zA-Z]?(?:\s*[-\/\pP]?\s*\pN+(?:\s*[\-a-zA-Z])?)*|[IVXLCDM]+(?!.*\b\pN+\b))(?<!\s) # House number \s*(?:(?:[,\/]|(?=\#)|\s)\s*(?!\s*No\.)\s* (?P<B_Addition_to_address_2>(?!\s).*?))? # Addition to address 2 ) \s*\Z
/
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Open regex in editor

Description

This regular expression splits an address line like for example "1117 Franklin Blvd" into the street name and house number. It also supports addresses where street name and house number are the other way around (e.g. "Mustermannstr. 1"). Furthermore, this regular expression also supports address lines where additional information is given that is neither a street name nor a house number (e.g. "3940 Radio Road, Unit 110", "Pallaswiesenstr. 57 App. 235", "Suite 1500, 802 Docklands Street"). The regular expression has 8 capture groups in total. The first 4 capture groups get used when the house number precedes the street name. The names of these capture groups are prefixed with "A_". If the house number succeeds the street name, the last 4 capture groups are used. These are prefixed with "B_".

Submitted by Andre Wisplinghoff - 10 years ago