Please enable JavaScript to use this web application.
Regular
Expressions
101
Social
Donate
Info
Regex Editor
Community Patterns
Account
Regex Quiz
Settings
Order By
Most Recent
Most upvotes
Most downvotes
Highest Score
Lowest Score
Filter by Flavor
PCRE2 (PHP >=7.3)
PCRE (PHP <7.3)
ECMAScript (JavaScript)
Python
Golang
Java 8
.NET 7.0 (C#)
Rust
Sponsors
There are currently no sponsors.
Become a sponsor today!
Community Patterns
Search among 18,040 community submitted regex patterns...
0
This is called a negated lookbehind.
PCRE (PHP <7.3)
Matches x only if x is not preceded by y.This is called a negated lookbehind. For example, /(?<!-)\d+/ matches a number only if it is not preceded by a minus sign. /(?<!-)\d+/.exec('3') matches "3". /(?<!-)\d+/.exec('-3') match is not found because the number is preceded by the minus sign.
Submitted by
anonymous
-
6 years ago
0
PRODUCAO DD/MM/YYYY A|a|e|TO|HASTA DD/MM/YYYY
PCRE (PHP <7.3)
no description available
Submitted by
anonymous
-
6 years ago
0
PRODUCAO MM/YYYY A|a|e|TO|HASTA MM/YYYY
PCRE (PHP <7.3)
no description available
Submitted by
anonymous
-
6 years ago
0
VENCIMENTO DD/MM/YYYY A|a|e|TO|HASTA DD/MM/YYYY
PCRE (PHP <7.3)
no description available
Submitted by
anonymous
-
6 years ago
0
Regex para validar data (trata ano bissexto)
PCRE (PHP <7.3)
no description available
Submitted by
anonymous
-
6 years ago
0
Regex to validate dates (validate leap year)
PCRE (PHP <7.3)
no description available
Submitted by
anonymous
-
6 years ago
0
Validaing numbers other than 0
PCRE (PHP <7.3)
no description available
Submitted by
anonymous
-
6 years ago
0
Excel to DB
PCRE (PHP <7.3)
no description available
Submitted by
anonymous
-
6 years ago
0
NANPA TN Including X11 without 555
PCRE (PHP <7.3)
no description available
Submitted by
anonymous
-
6 years ago
0
Clearswift Mail Gateway
PCRE (PHP <7.3)
no description available
Submitted by
anonymous
-
6 years ago
0
IP addresses
PCRE (PHP <7.3)
no description available
Submitted by
anonymous
-
6 years ago
0
COM
PCRE (PHP <7.3)
no description available
Submitted by
anonymous
-
6 years ago
0
Financial for HA
ECMAScript (JavaScript)
Finds the Financial line of the Hazard Analysis.
Submitted by
anonymous
-
6 years ago
0
Legal/Regulatory for HA
ECMAScript (JavaScript)
Finds the Legal/Regulatory line of the Hazard Analysis.
Submitted by
anonymous
-
6 years ago
0
Data Integrity for HA
ECMAScript (JavaScript)
Finds the Data Integrity line of the Hazard Analysis.
Submitted by
anonymous
-
6 years ago
0
Patient Safety for HA
ECMAScript (JavaScript)
Finds the Patient Safety line of the Hazard Analysis.
Submitted by
anonymous
-
6 years ago
0
CyberSecurity/Information Security for HA
ECMAScript (JavaScript)
Finds the CyberSecurity/Information Security line of the Hazard Analysis.
Submitted by
anonymous
-
6 years ago
0
Mot de passe
PCRE (PHP <7.3)
1 lettre, 1 chiffre, 1 caractère spécial au moins Chaine comprise entre 8 et 15 caractères ^(?=.[A-Za-z])(?=.\d)(?=.[&-+!$@%])([&-+!*$@%\w]{8,15})$
Submitted by
anonymous
-
6 years ago
0
E-mail
PCRE (PHP <7.3)
adresses mail ^[a-z0-9.-]+@[a-z0-9.-]{2,}\.[a-z]{2,4}$
Submitted by
anonymous
-
6 years ago
0
SQL Regex
PCRE (PHP <7.3)
no description available
Submitted by
anonymous
-
6 years ago
1
...
548
549
550
551
552
...
902
Community Library Entry
0
Regular Expression
PCRE (PHP <7.3)
/
^
(
[
0
-
1
]
\d
:
[
0
-
5
]
\d
)
|
(
^
20:0
[
0
-
5
]
)
/
mg
Open regex in editor
Description
no description available
Submitted by
anonymous
-
9 years ago