Regular Expressions 101

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Community Patterns

34

Strict Password Validator

ECMAScript (JavaScript)
This regex matches only when all the following are true: password must contain 1 number (0-9) password must contain 1 uppercase letters password must contain 1 lowercase letters password must contain 1 non-alpha numeric number...
Submitted by qho - 7 years ago (Last modified a year ago)
13

CSS Color Matcher

ECMAScript (JavaScript)
Pattern matching and extracting color code formats using RegEx. https://github.com/Kyza/color-regex/
Submitted by Kyza - a year ago
30

Cron schedule

Recommended
PCRE (PHP <7.3)
Validate cron lines (even the ones commented out)
Submitted by anonymous - 9 years ago
24

best youtube id match ( iframe embed replace ready )

Recommended
PCRE (PHP <7.3)
MATCH ANY YOUTUBE ID author : mi-ca v1.0 – 2017.03.08 This Regex match any youtube url and grab the ID. Embed ready √ --...
Submitted by mi-ca.ch - 6 years ago
1...900901902

Community Library Entry

0

Regular Expression
PCRE (PHP <7.3)

/
(?:^|\t) ( [^\t\n]+(?=(?:\t|\n[^ ])) | [^\t\n]+(?=(?:\t|\n([ ]+))) ) #(|[ ]{20})#(?![ ]{3,}) #| #[^\t]+?(?=(?:\n)([ ]+)")
/
gxsm
Open regex in editor

Description

part 2 of two-step replacement routine: before: abc def gh gk n opq

after: 'abc def gh 'gk n opq

Submitted by anonymous - 6 years ago