function func_get_args () {
    if (!arguments.callee.caller) {
        try {
            throw new Error('Either you are using this in a browser which does not support the "caller" property or you are calling this from a global context');
            // return false;
        } catch (e) {
            return false;
        }
    }
 
    return Array.prototype.slice.call(arguments.callee.caller.arguments);
}

PHP's func_get_args() for Javascript

JavaScript