Regular Expressions 101

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Community Patterns

2

Remove multiple white spaces between words

PCRE (PHP <7.3)
Remove multiple white spaces between words and replace it with the char of your choosing.
Submitted by binary_fm - 8 years ago
2

URL extractor

PCRE (PHP <7.3)
Extract parts of an URL.
Submitted by Gilles Marchand - 8 years ago
2

RewriteMatch into subfolder

PCRE (PHP <7.3)
RegEx for an .htaccess rewrite into a subfolder without provoking a 'too many redirects' error
Submitted by Nils B. - 8 years ago
2

Password (4 Classes)

Python
1 Uppercase 1 lower case 1 number 1 not a number or letter
Submitted by anonymous - 8 years ago
2

paramaterised sql like expressions for sybase

PCRE (PHP <7.3)
no description available
Submitted by robessog - 8 years ago
2

multiple sql like expressions

PCRE (PHP <7.3)
no description available
Submitted by robessog - 8 years ago
2

search for a regex excluding a word

PCRE (PHP <7.3)
^((?!proposed_).)*((project|task)_details) matches: project_details task_details...
Submitted by aymon - 8 years ago
2

Delete Blank Lines

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 8 years ago
2

IPv6 detection

Python
It's too large to match with all which seems like an IPv6. It's not perfect, but it's detects more valid IPv6 than some others regex.
Submitted by Ajabep - 8 years ago
2

Matches human genomic coordinates

PCRE (PHP <7.3)
This expression matches human genomic coordinates, similat to those being used by genome browsers (e.g. the UCSC Genome Browser). It can match: chromosome, chromosome start, chromosome start end, chromosome start end reference sequence, chromosome start end reference sequence alternative sequence. T...
Submitted by Panagiotis Moulos - 8 years ago
2

Escape regex meta characters

ECMAScript (JavaScript)
This expression escapes characters, which have a special meaning in regex, like .?[]/ and so on. Use it to transform a string that you want to use literally in another regex.
Submitted by Florian Andresen - 8 years ago
2

Console arguments handling

PCRE (PHP <7.3)
Splitting string on parts. Able quoted strings and escaped chars. Without optimizations. command arg1 "string arg \"qoute\" demo" arg3
Submitted by anonymous - 8 years ago
2

match HTML-safe strings with at least one alphanumeric character

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 8 years ago
2

Email combo to username combo

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 8 years ago
2

negative lookahead

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 8 years ago
2

Find IP

PCRE (PHP <7.3)
Regex to match an IPv4 address at beginning
Submitted by edoz90 - 8 years ago
2

URL MATCH

PCRE (PHP <7.3)
URL MATCH
Submitted by activesatan - 8 years ago
2

Number or Range

ECMAScript (JavaScript)
Allows either a number (e.g. "1", "1.01") or a range (e.g. "1-2", "1.0 - 1.3"). Also allows whitespace on either side of the numbers.
Submitted by Mark Newcomb - 8 years ago
2

.*(\d+).* Selects last number

Python
no description available
Submitted by anonymous - 8 years ago
2

Test numeric input to be between 0,01 and 100,00

ECMAScript (JavaScript)
Tests a numeric input to be between 0,00 < input <= 100,00. Decimals are optional but have at max 2 places.
Submitted by Torsten Walter - 8 years ago
1...3031323334...902

Community Library Entry

1

Regular Expression
ECMAScript (JavaScript)

/
(https?:\/\/)((?:[-a-zA-Z0-9@:%._+~#=]+)\.)?([-a-zA-Z0-9@:%._+~#=]{2,256}\.[a-z]{2,6}\b|localhost(?:\:\d{1,5})?)(\/[\w.-]*)*(\?[\w\-._~!*'(),%=&+]*)?($|\#.*|\?.*)?
/
gm
Open regex in editor

Description

Match a URL and capture its parts. Please suggest your improvements.

Submitted by Lamer217 - 10 months ago