Regular Expressions 101

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Library entries

-2
pcre

Name

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

Käyttäjätunnus

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

paren strip test

paren strip test
Submitted by marie bacuno - 8 years ago
0
pcre

Tele

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

Regex to replace alert

foo
Submitted by anonymous - 8 years ago
1
pcre

Achar dominios

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

win path

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

Matches first word

no description available
Submitted by anonymous - 8 years ago
0
pcre

aliexpres

test z wyrażeniem regularnym
Submitted by diox - 8 years ago
0
pcre

hhh

Fghh
Submitted by ggj - 8 years ago
0
pcre

Jeny

132
Submitted by Renderlife - 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