LaravelBook\Laravel4Powerpack\Str::ascii PHP Method

    public function ascii($value)
    {
        $foreign = $this->ascii;
        $value = preg_replace(array_keys($foreign), array_values($foreign), $value);
        return preg_replace('/[^\\x09\\x0A\\x0D\\x20-\\x7E]/', '', $value);
    }