Elasticsearch と PHP を使用してインテリジェントな広告推奨システムを構築する方法

require 'vendor/autoload.php';

use ElasticsearchClientBuilder;

$client = ClientBuilder::create()->build();

$params = [
    'index' => 'advertisements',
    'body' => [
        'mappings' => [
            'properties' => [
                'title' => [
                    'type' => 'text'
                ],
                'content' => [
                    'type' => 'text'
                ],
                'tag' => [
                    'type' => 'keyword'
                ],
                'user_id' => [
                    'type' => 'integer'
                ]
            ]
        ]
    ]
];

$response = $client->indices()->create($params);

$params = [
    'index' => 'advertisements',
    'body' => [
        'query' => [
            'match' => [
                'tag' => 'sports'
            ]
        ]
    ]
];

$response = $client->search($params);

// 控制器代码

public function recommend()
{
    $user_id = $_SESSION['user_id'];

    // 查询用户的兴趣标签
    $interests = $this->userModel->getInterests($user_id);

    // 使用Elasticsearch进行广告推荐
    $params = [
        'index' => 'advertisements',
        'body' => [
            'query' => [
                'terms' => [
                    'tag' => $interests
                ]
            ]
        ]
    ];

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

    $advertisements = $response['hits']['hits'];

    // 渲染视图，将推荐结果呈现给用户
    $this->view('recommend', ['advertisements' => $advertisements]);
}

// 视图代码

foreach ($advertisements as $advertisement) {
    echo "<div class='advertisement'>";
    echo "<h2>{$advertisement['_source']['title']}</h2>";
    echo "<p>{$advertisement['_source']['content']}</p>";
    echo "</div>";
}