Regular Expressions 101

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Community Patterns

1

pattern

PCRE (PHP <7.3)
lookahead
Submitted by Kmna - 9 years ago
0

date format slicing

PCRE (PHP <7.3)
lookahead
Submitted by Kmna - 9 years ago
10

Valid Telephone Number

ECMAScript (JavaScript)
This regex validates varying types of telephone numbers.
Submitted by Adam Recvlohe - 9 years ago
1

get rid of hash tag

ECMAScript (JavaScript)
no description available
Submitted by LittlePiggy - 9 years ago
2

Basic Email

PCRE (PHP <7.3)
no description available
Submitted by Kareem Cambridge - 9 years ago
1

Match zero-trimmed, quarter increment number

ECMAScript (JavaScript)
000.250 => 0.25 1.1 => 1 0.0 => 0
Submitted by Paul Erickson - 9 years ago
1

java

Python
no description available
Submitted by anonymous - 9 years ago
1

Replace comma in brackets

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
1

Backline

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
1

input variable legnth string to group

PCRE (PHP <7.3)
select leading X digits, remove zero if present, and insert 6 or 7 digit length into a name group
Submitted by anonymous - 9 years ago
1

Setting Conversion - Original

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
1

Split user agent into groups

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
1

Regex - global match, multiline

Python
no description available
Submitted by MetalMuzu - 9 years ago
0

<Trigger R="In a burst of feathers, a portal appears!" SD="DUCK PORTAL

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
1

mail

PCRE (PHP <7.3)
mail
Submitted by anonymous - 9 years ago
0

Search href in <a> tag (internal links)

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
2

Search src from <img> tag

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
1

Parse JS expression string

PCRE (PHP <7.3)
This expression is used to parse strings like category.slug==smartphone&&request.user_id==12
Submitted by Phaeton - 9 years ago
1

looking for a word of 4 letter

PCRE (PHP <7.3)
look for a word of 4 letter with the look behind and look ahead
Submitted by balzrog & torb500 - 9 years ago
1

assertion (lookbehind and lookahead)

PCRE (PHP <7.3)
no description available
Submitted by adri et nico - 9 years ago
1...765766767768769...902

Community Library Entry

0

Regular Expression
PCRE2 (PHP >=7.3)

/
^[^[:alnum:]]*$
/
gm
Open regex in editor

Description

Find lines that are not alphanumeric

Submitted by anonymous - 3 years ago