Regular Expressions 101

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Library entries

0
pcre

webui

webui test
Submitted by Stelsy - 8 years ago
5
pcre

URL

URL Description from Dr. M. G. @ Brookes
Submitted by anonymous - 8 years ago
0
pcre

TCP/UDP port number

validates TCP/UDP port number (1..65535)
Submitted by sanchox - 8 years ago
1
pcre

vx

sv
Submitted by cv - 8 years ago
1
pcre

PHPfrance soustraction d'une chaîne

no description available
Submitted by anonymous - 8 years ago
1
pcre

sd

asd
Submitted by asd - 8 years ago
1
pcre

fixer

no description available
Submitted by t - 8 years ago
1
pcre

CSS instructions

Find everything between {}
Submitted by anonymous - 8 years ago
1
pcre

Test

Tralala
Submitted by Tralala - 8 years ago
1
pcre

q3df visname tester

www.q3df.org profil visname regex tester
Submitted by nightmare - 8 years ago
1
pcre

science on saturday 1

no description available
Submitted by anonymous - 8 years ago
4
pcre

utf-8 hex.

utf-8 hex. code armenian. Firs character regexp
Submitted by Dyxx - 8 years ago
1
pcre

bla

no description available
Submitted by anonymous - 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

Loading markdown...
Submitted by Mateon1 - 8 years ago