Regular Expressions 101

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Library entries

-2
pcre

Russian mobile number normilizer (dumb)

no description available
Submitted by fullpipe - 9 years ago
-2
pcre

Filter IP from beggin of log

no description available
Submitted by W - 9 years ago
-2
pcre

Ukazka

no description available
Submitted by anonymous - 8 years ago
-2
pcre

failed attempt

no description available
Submitted by DynV - 8 years ago
-2
pcre

A masz!

no description available
Submitted by Ja - 8 years ago
-2
pcre

[A-Z]+[a-z]{1,2}[0-9]*

no description available
Submitted by anonymous - 8 years ago
-2
pcre

Match v4 IP address

no description available
Submitted by Budiony Damyanov - 8 years ago
-2
pcre

test

no description available
Submitted by anonymous - 8 years ago
-2
pcre

Unicode email sanitising

no description available
Submitted by anonymous - 8 years ago
-2
pcre

French phone number

no description available
Submitted by Benoit Anastay - 8 years ago
-2
pcre

1_aa3

no description available
Submitted by anonymous - 8 years ago
-2
pcre

Sample

no description available
Submitted by anonymous - 8 years ago
-2
pcre

Find multiple XML documents in file

as title says
Submitted by Doro - 8 years ago

match valid JSON

Vote

26

Regular Expression
pcre

/
(?(DEFINE) # Note that everything is atomic, JSON does not need backtracking if it's valid # and this prevents catastrophic backtracking (?<json>(?>\s*(?&object)\s*|\s*(?&array)\s*)) (?<object>(?>\{\s*(?>(?&pair)(?>\s*,\s*(?&pair))*)?\s*\})) (?<pair>(?>(?&STRING)\s*:\s*(?&value))) (?<array>(?>\[\s*(?>(?&value)(?>\s*,\s*(?&value))*)?\s*\])) (?<value>(?>true|false|null|(?&STRING)|(?&NUMBER)|(?&object)|(?&array))) (?<STRING>(?>"(?>\\(?>["\\\/bfnrt]|u[a-fA-F0-9]{4})|[^"\\\0-\x1F\x7F]+)*")) (?<NUMBER>(?>-?(?>0|[1-9][0-9]*)(?>\.[0-9]+)?(?>[eE][+-]?[0-9]+)?)) ) \A(?&json)\z
/
x

Description

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Submitted by Mateon1 - 8 years ago