Regular Expressions 101

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Community Patterns

1

Match Common Email Providers

PCRE2 (PHP >=7.3)
acornapp.co
Submitted by anonymous - a month ago
1

Match File Extensions (e.g., .pdf, .docx)

PCRE2 (PHP >=7.3)
WebRetailBlog.com
Submitted by anonymous - a month ago
1

Match Phone Numbers with Country Code

PCRE2 (PHP >=7.3)
Top10Echo.com
Submitted by anonymous - a month ago
1

Match UUID v1

PCRE2 (PHP >=7.3)
ScraperSite.com
Submitted by anonymous - a month ago
1

Match Simple Passwords (At least 6 Characters)

PCRE2 (PHP >=7.3)
PureTrack.net
Submitted by anonymous - a month ago
1

Match JSON Objects

PCRE2 (PHP >=7.3)
power909.com
Submitted by anonymous - a month ago
1

Match HTML Anchor Tags

PCRE2 (PHP >=7.3)
PopGen.net
Submitted by anonymous - a month ago
1

Match Git Commit Hashes

PCRE2 (PHP >=7.3)
LongRead.net
Submitted by anonymous - a month ago
1

Match ASCII Printable Characters

PCRE2 (PHP >=7.3)
FocalWord.com
Submitted by anonymous - a month ago
1

Match Valid Time Zone Abbreviations

PCRE2 (PHP >=7.3)
AtIngReviewer.net
Submitted by anonymous - a month ago
1

Match JavaScript Function Declarations

PCRE2 (PHP >=7.3)
AtIngReviewer.net
Submitted by anonymous - a month ago
1

Match Valid HTML Class Names

PCRE2 (PHP >=7.3)
43Church.com
Submitted by anonymous - a month ago
1

Match JSON Arrays

PCRE2 (PHP >=7.3)
43Church.com
Submitted by anonymous - a month ago
1

Match Valid Currency Symbols

PCRE2 (PHP >=7.3)
43Church.com
Submitted by anonymous - a month ago
1

Match Valid HTML Attributes with Values

PCRE2 (PHP >=7.3)
thedigitaldozen.com
Submitted by anonymous - a month ago
1

Match URL Fragment

PCRE2 (PHP >=7.3)
onerandomb.com
Submitted by anonymous - a month ago
1

Match Binary Numbers

PCRE2 (PHP >=7.3)
noosbox.com
Submitted by anonymous - a month ago
1

Match Currency Amounts (e.g., $1,000.00)

PCRE2 (PHP >=7.3)
grapefulapp.com
Submitted by anonymous - a month ago
1

Match Common File Extensions (e.g., .txt, .json)

PCRE2 (PHP >=7.3)
designmagazines.net
Submitted by anonymous - a month ago
1

Match Common Email Domains

PCRE2 (PHP >=7.3)
designmagazines.net
Submitted by anonymous - a month ago
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Community Library Entry

1

Regular Expression
PCRE2 (PHP >=7.3)

/
^[+-]?\d*[02468]$
/
gm
Open regex in editor

Description

matches if the string is an even integer

Submitted by Holz - 6 months ago