Regular Expressions 101

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Community Patterns

1

number of spaces at beginning of lines

ECMAScript (JavaScript)
find the number of spaces at the beginning of lines in a file.
Submitted by andy - 9 years ago
2

test

PCRE (PHP <7.3)
test
Submitted by anonymous - 9 years ago
1

TEST 2

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

TEST 1

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

[Fixed] Parse all simple math expressions (decimal, negative, whole)

PCRE (PHP <7.3)
Includes +, -, /, *, and ^. Can parse decimals. Can parse negative whole numbers and decimals. Can parse parentheses. Used only for parsing math expressions using regex.
Submitted by anonymous - 9 years ago
0

Match everything between brackets, including brackets

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 9 years ago
0

Match everything between brackets, including brackets

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

Parse all simple math expressions (decimals, whole, negative)

PCRE (PHP <7.3)
-2.02^3(2+3.024)+3.14159-(45^23)/(19-4)
Submitted by anonymous - 9 years ago
1

teste

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

Version parsing

PCRE (PHP <7.3)
Version parsing from following format: ..build Gets 4 groups: major, minor, build and postfix (last two only of they present in input string) For example: 1.2.3456-SNAPSHOT gets major=1, minor=2, build=3456, postfix="SNAPSHOT"...
Submitted by Ivkond - 9 years ago
1

reddit username

PCRE (PHP <7.3)
no description available
Submitted by l3d00m - 9 years ago
1

wso list

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

Match slahses and numbers

ECMAScript (JavaScript)
Match all forward and backward slashes and numbers in a string. Usefull for obtaining only text chars from address.
Submitted by Rado - 9 years ago
0

Phone number

ECMAScript (JavaScript)
no description available
Submitted by Vaseker - 9 years ago
0

lookahead not match 'aa'

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 9 years ago
1

Simple global regex

Python
Regex for finding tempratures in a text
Submitted by anonymous - 9 years ago
1

Amazon.ca Order Total

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 9 years ago
-3

Remove special character at first position of string

PCRE (PHP <7.3)
This search for special character at first position in the string
Submitted by anonymous - 9 years ago
1

1

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

Extract values from hostname

ECMAScript (JavaScript)
no description available
Submitted by Matthew Ledbetter - 9 years ago
1...779780781782783...902

Community Library Entry

0

Regular Expression
PCRE2 (PHP >=7.3)

/
((https?:)?\/\/)?(([\d\w]|%[a-fA-f\d]{2,2})+(:([\d\w]|%[a-fA-f\d]{2,2})+)?@)?([\d\w][-\d\w]{0,253}[\d\w]\.)+[\w]{2,63}(:[\d]+)?(\/([-+_~.\d\w]|%[a-fA-f\d]{2,2})*)*(\?(&?([-+_~.\d\w]|%[a-fA-f\d]{2,2})=?)*)?(#([-+_~.\d\w]|%[a-fA-f\d]{2,2})*)?
/
gmi
Open regex in editor

Description

check for urls

Submitted by naxmefy - 3 years ago