elasticsearch - Does anyone know about the query result highlighting problem of es-php or mmanos/laravel-search?

The following code is implemented by laravel+elastisearch-php (https://github.com/elastic/elasticsearch-php), but it cannot return the highlighted content. I read it online at https://segmentfault.com/a/1190000003010186 and below. One example mentioned highlighting, but mmanos is not very good at using it. For example, how to find a query of a specified type under a specified index?
I’m not confused about the above method. Can any friend give me some advice? Thanks! ! !

        $params=[
            'index' => 'n_index',
            'type' => 'n_type',
            'body' => [
                'query' => [
                    'match' => ['ntitle' => '要查询的词']
                ],
                'highlight'=>[
                    'pre_tags'=>['', ''],
                    'post_tags'=>['', ''],
                    'fields'=>[
                        'ntitle'=>[]
                    ]
                ]
            ]
        ];

        $response = $this->client->search($params);
    
        echo "
";
        var_dump($response);
        echo "
";

The above code can find the following results

array(4) {
  ["took"]=>
  int(6)
  ["timed_out"]=>
  bool(false)
  ["_shards"]=>
  array(3) {
    ["total"]=>
    int(5)
    ["successful"]=>
    int(5)
    ["failed"]=>
    int(0)
  }
  ["hits"]=>
  array(3) {
    ["total"]=>
    int(3)
    ["max_score"]=>
    float(1.8223838)
    ["hits"]=>
    array(3) {
      [0]=>
      array(5) {
        ["_index"]=>
        string(7) "n_index"
        ["_type"]=>
        string(6) "n_type"
        ["_id"]=>
        string(1) "6"
        ["_score"]=>
        float(1.8223838)
        ["_source"]=>
        array(1) {
          ["ntitle"]=>
          string(35) "ntitle内容2"
        }
      }
      [1]=>
      array(5) {
        ["_index"]=>
        string(7) "n_index"
        ["_type"]=>
        string(6) "n_type"
        ["_id"]=>
        string(1) "7"
        ["_score"]=>
        float(1.2087858)
        ["_source"]=>
        array(1) {
          ["ntitle"]=>
          string(35) "ntitle内容1"
        }
      }
      [2]=>
      array(5) {
        ["_index"]=>
        string(7) "n_index"
        ["_type"]=>
        string(6) "n_type"
        ["_id"]=>
        string(1) "5"
        ["_score"]=>
        float(0.23033649)
        ["_source"]=>
        array(1) {
          ["ntitle"]=>
          string(35) "ntitle内容3"
        }
      }
    }
  }
}

Highlights are not returned,

Reply content:

The following code is implemented by laravel+elastisearch-php (https://github.com/elastic/elasticsearch-php), but it cannot return the highlighted content. I read it online at https://segmentfault.com/a/1190000003010186 and below. One example mentioned highlighting, but mmanos is not very good at using it. For example, how to find a query of a specified type under a specified index?
I’m not confused about the above methods. Can anyone give me some advice? Thanks! ! !

        $params=[
            'index' => 'n_index',
            'type' => 'n_type',
            'body' => [
                'query' => [
                    'match' => ['ntitle' => '要查询的词']
                ],
                'highlight'=>[
                    'pre_tags'=>['', ''],
                    'post_tags'=>['', ''],
                    'fields'=>[
                        'ntitle'=>[]
                    ]
                ]
            ]
        ];

        $response = $this->client->search($params);
    
        echo "
";
        var_dump($response);
        echo "
";

The above code can find the following results

array(4) {
  ["took"]=>
  int(6)
  ["timed_out"]=>
  bool(false)
  ["_shards"]=>
  array(3) {
    ["total"]=>
    int(5)
    ["successful"]=>
    int(5)
    ["failed"]=>
    int(0)
  }
  ["hits"]=>
  array(3) {
    ["total"]=>
    int(3)
    ["max_score"]=>
    float(1.8223838)
    ["hits"]=>
    array(3) {
      [0]=>
      array(5) {
        ["_index"]=>
        string(7) "n_index"
        ["_type"]=>
        string(6) "n_type"
        ["_id"]=>
        string(1) "6"
        ["_score"]=>
        float(1.8223838)
        ["_source"]=>
        array(1) {
          ["ntitle"]=>
          string(35) "ntitle内容2"
        }
      }
      [1]=>
      array(5) {
        ["_index"]=>
        string(7) "n_index"
        ["_type"]=>
        string(6) "n_type"
        ["_id"]=>
        string(1) "7"
        ["_score"]=>
        float(1.2087858)
        ["_source"]=>
        array(1) {
          ["ntitle"]=>
          string(35) "ntitle内容1"
        }
      }
      [2]=>
      array(5) {
        ["_index"]=>
        string(7) "n_index"
        ["_type"]=>
        string(6) "n_type"
        ["_id"]=>
        string(1) "5"
        ["_score"]=>
        float(0.23033649)
        ["_source"]=>
        array(1) {
          ["ntitle"]=>
          string(35) "ntitle内容3"
        }
      }
    }
  }
}

Highlights are not returned,