Regular Expressions 101

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Regular Expressions 101

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PCRE2 (PHP >=7.3)
PCRE (PHP <7.3)
ECMAScript (JavaScript)
Python
Golang
Java 8
.NET (C#)

Function

Match
Substitution
List
Unit Tests

Tools

Code Generator
Regex Debugger

Regular Expression
Regex Versions
No Match

Test String

Substitution

Processing...

Shortcut	Description
ctrl+1	Switch to regex matching
ctrl+2	Switch to regex substitution
ctrl+3	Switch to regex list substitution
ctrl+4	Switch to unit tests
ctrl+b	Open regex debugger
ctrl+g	Open code generator
ctrl+enter	Run unit tests (when view is open)

Regular Expressions 101

Regular Expressions 101

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Explanation

Match Information

Quick Reference

Regular Expression
Regex Versions
No Match

Regex Versions

Delimiters

Regex Flags

Test String

Substitution

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Regular Expressions 101

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Function

Tools

Explanation

Match Information

Quick Reference

Regular Expressionv1Select Regex VersionRegex VersionsNo Match

Regex Versions

Delimiters

Regex Flags

Test String

Substitution

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Regular Expression
Regex Versions
No Match