js2php is a JavaScript (ES6) to PHP source-to-source transpiler that converts modern JavaScript features like classes, arrow functions, template strings, and various ES6 constructs into PHP code. It includes support for core JavaScript functionality including Array methods, Math operations, String manipulation, and Date handling. The tool is primarily intended for developers interested in exploring JavaScript-to-PHP conversion or experimenting with cross-language compatibility, though it's explicitly marked as experimental and not recommended for production use.