foreach matches as key value from matches key to matches key foobar fr

        foreach ($matches[1] as $key=>$value)
        {
            $from = $matches[2][$key];
            $to = $matches[4][$key];

            $foobar[$from] = 0;
            $foobar[$to] = 0;
        }
        foreach ($foobar as $key=>$value);
        {
            echo "$key = $value\n";
        }