无法解析sphinx / php中的匹配结果

Question

如何解析sphinx在php中返回的数组

php code

if ( $result === false ) {
      echo "Query failed: " . $cl->GetLastError() . ".\n";
  }
  else {
      if ( $cl->GetLastWarning() ) {
          echo "WARNING: " . $cl->GetLastWarning() . "<br>";
      }

        if ($result['0'] > 0) {
            // print_r($result['0']['attrs']);   
            $words[] = $result['0']['matches'];
            foreach ($words as $val) {
                echo "=> " . $val['keyword'] . $val['ref'];
            }     
        } else {
                echo 'No results found';        
        }
  }

Array
(
    [0] => Array
        (
            [error] => 
            [warning] => 
            [status] => 0
            [fields] => Array
                (
                    [0] => keyword
                    [1] => ref
                )

            [attrs] => Array
                (
                    [keyword] => 7
                    [ref] => 7
                )

            [matches] => Array
                (
                    [25367434949034415] => Array
                        (
                            [weight] => 1643
                            [attrs] => Array
                                (
                                    [keyword] => hunting
                                    [ref] => activity
                                )

                        )

                )

            [total] => 1
            [total_found] => 1
            [time] => 0.000
            [words] => Array
                (
                    [hunt] => Array
                        (
                            [docs] => 1
                            [hits] => 1
                        )

                )

        )

)

我想解析比赛＆＃39;数组和它的子数组值，如关键字，ref等。