Regex Tester & Validator

This PCRE regex uses the `\K` keep modifier to match and extract values at the end of a line following the prefix `abc/`. It captures two specific groups separated by an ampersand: the first group allows alphanumeric characters, underscores, and dots, while the second allows only word characters. It is typically used in multiline text processing to parse query strings, URL parameters, or configuration lines without including the prefix in the overall match.