alexia\mar\tests\critical::_duplicateFunctionParameter PHP Method

    public function _duplicateFunctionParameter($line)
    {
        $regex = "#function [a-zA-Z_\\x7f-\\xff][a-zA-Z0-9_\\x7f-\\xff]+\\((.*?)(?:\\)(?!(?:\\s*?,|\\s*?\\\$)))#i";
        if (preg_match($regex, $line, $matches)) {
            //Abuse the lexer to get variables out.
            $tokens = token_get_all("<?php " . $matches[1] . "?>");
            $variables = [];
            foreach ($tokens as $token) {
                if (!is_array($token)) {
                    continue;
                }
                if ($token[0] == T_VARIABLE) {
                    $variables[] = $token[1];
                }
            }
            $totalArguments = count($variables);
            $variables = array_unique($variables);
            $uniqueArguments = count($variables);
            if ($totalArguments != $uniqueArguments) {
                return true;
            }
        }
        return false;
    }