Regular Expressions 101

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Library entries

1
java

phone number middle number parsing

middle number parsing regex
Submitted by anonymous - 5 days ago
0
java

Verify email

Regex for email
Submitted by anonymous - 7 days ago
0
pcre

https://regex101.com/r/VrZHR8/1

https://regex101.com/r/VrZHR8/1
Submitted by anonymous - 13 days ago
0
golang

S3 Path with ending .json

S3 Path with ending .json
Submitted by Sowmith - 16 days ago
0
pcre

filter

filter string
Submitted by anonymous - 17 days ago
0
pcre

1

Prueba 1
Submitted by anonymous - 19 days ago
0
pcre

mvc

com c#
Submitted by anonymous - a month ago
0
pcre

test

teste
Submitted by anonymous - a month ago
1
golang

1

11
Submitted by anonymous - a month ago
0
java

for-orth

For orth
Submitted by gastipatis - a month 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