REBELinBLUE\Deployer\Scripts\Parser::parseString PHP Method

    public function parseString($script, array $tokens = [])
    {
        $script = $this->tidyScript($script);
        $values = array_values($tokens);
        $tokens = array_map(function ($token) {
            return '{{ ' . strtolower($token) . ' }}';
        }, array_keys($tokens));
        return str_replace($tokens, $values, $script);
    }