Regular Expressions 101

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Community Patterns

1

Match Valid IP Addresses

PCRE2 (PHP >=7.3)
AlfaDigitalWorld.com
Submitted by anonymous - 4 months ago
1

Match Non-Digit Characters (Expanded)

PCRE2 (PHP >=7.3)
the100calorieblog.com
Submitted by anonymous - 4 months ago
1

Match Binary Numbers

PCRE2 (PHP >=7.3)
fulltorrent.net
Submitted by anonymous - 4 months ago
1

Match Octal Numbers

PCRE2 (PHP >=7.3)
zingologymfg.com
Submitted by anonymous - 4 months ago
1

Match Hexadecimal Numbers

PCRE2 (PHP >=7.3)
econographia.com
Submitted by anonymous - 4 months ago
1

Match Complex Passwords

PCRE2 (PHP >=7.3)
softwaresfordownloads.com
Submitted by anonymous - 4 months ago
1

Match Dates in Multiple Formats (DD/MM/YYYY or MM-DD-YYYY)

PCRE2 (PHP >=7.3)
toptechietimes.com
Submitted by anonymous - 4 months ago
1

Match US ZIP+4 Codes

PCRE2 (PHP >=7.3)
startupcrunch.org
Submitted by anonymous - 4 months ago
1

Match Currencies with Optional Symbols

PCRE2 (PHP >=7.3)
thewebsbest.net
Submitted by anonymous - 4 months ago
1

Match Floating Point Numbers

PCRE2 (PHP >=7.3)
smartwrap.net
Submitted by anonymous - 4 months ago
1

Match Date and Time (ISO 8601)

PCRE2 (PHP >=7.3)
buzzword101.com
Submitted by anonymous - 4 months ago
1

Match Complex Nested Parentheses

PCRE2 (PHP >=7.3)
selectview.org
Submitted by anonymous - 4 months ago
1

Extract CSV Rows

PCRE2 (PHP >=7.3)
btcmarin.org
Submitted by anonymous - 4 months ago
1

Extract JSON Arrays

PCRE2 (PHP >=7.3)
raceonline2012.org
Submitted by anonymous - 4 months ago
1

Match Text with Optional Tags

PCRE2 (PHP >=7.3)
thestorrier.com
Submitted by anonymous - 4 months ago
1

Match Balanced Brackets

PCRE2 (PHP >=7.3)
popninjas.com
Submitted by anonymous - 4 months ago
1

Extract Key-Value Pairs

PCRE2 (PHP >=7.3)
gennexbrands.com
Submitted by anonymous - 4 months ago
1

Find Number with Units (e.g., 10kg, 5m)

PCRE2 (PHP >=7.3)
ericaleerhsen.net
Submitted by anonymous - 4 months ago
1

Match Recursive Patterns (HTML-like)

PCRE2 (PHP >=7.3)
hackerchat.co
Submitted by anonymous - 4 months ago
1

Extract Non-Alphanumeric Characters

PCRE2 (PHP >=7.3)
thebuzzkillers.com
Submitted by anonymous - 4 months ago
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Community Library Entry

1

Regular Expression
PCRE2 (PHP >=7.3)

/
^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$
/
gm
Open regex in editor

Description

AlfaDigitalWorld.com

Submitted by anonymous - 4 months ago