Developer Tool

Regex Tester

Test regular expressions against text using PHP's PCRE regex engine. View matches, capture groups, and match positions instantly.

Regular Expression

Enter the pattern without delimiters. Example: \b[A-Z][a-z]+\b

Flags

Supported: i case-insensitive, m multiline, s dot-all, u UTF-8, x extended, A, D, U.

Operation

First Match

Find the first match and its capture groups.

Find All

Find every match in the test string.

Test String

PCRE Compatible

Uses PHP's PCRE regular expression engine, making it useful for testing patterns used in PHP applications.

Capture Groups

Inspect captured values from numbered and named groups alongside their positions.

No Storage

Test input is processed for the current request and is not intentionally stored by this tool.