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                **一、安裝** 通過composer安裝 ~~~ composer require 'elasticsearch/elasticsearch' ~~~ ## ## **二、使用** 創建ES類 ~~~ <?php require 'vendor/autoload.php'; //如果未設置密碼 $es = \Elasticsearch\ClientBuilder::create()->setHosts(['xxx.xxx.xxx.xxx'])->build(); //如果es設置了密碼 $es = \Elasticsearch\ClientBuilder::create()->setHosts(['http://username:password@xxx.xxx.xxx.xxx:9200'])->build() ~~~ ## **三、新建ES數據庫** index 對應關系型數據(以下簡稱MySQL)里面的數據庫,而不是對應MySQL里面的索引 ~~~ <?php $params = [ 'index' => 'autofelix_db', #index的名字不能是大寫和下劃線開頭 'body' => [ 'settings' => [ 'number_of_shards' => 5, 'number_of_replicas' => 0 ] ] ]; $es->indices()->create($params); ~~~ ## **四、創建表** 在MySQL里面,光有了數據庫還不行,還需要建立表,ES也是一樣的 ES中的type對應MySQL里面的表 ES6以前,一個index有多個type,就像MySQL中一個數據庫有多個表一樣 但是ES6以后,每個index只允許一個type 在定義字段的時候,可以看出每個字段可以定義單獨的類型 在first_name中還自定義了 分詞器 ik,這是個插件,是需要單獨安裝的 ~~~ <?php $params = [ 'index' => 'autofelix_db', 'type' => 'autofelix_table', 'body' => [ 'mytype' => [ '_source' => [ 'enabled' => true ], 'properties' => [ 'id' => [ 'type' => 'integer' ], 'first_name' => [ 'type' => 'text', 'analyzer' => 'ik_max_word' ], 'last_name' => [ 'type' => 'text', 'analyzer' => 'ik_max_word' ], 'age' => [ 'type' => 'integer' ] ] ] ] ]; $es->indices()->putMapping($params); ~~~ ~~~ 五、插入數據 現在數據庫和表都有了,可以往里面插入數據了 在ES里面的數據叫文檔 可以多插入一些數據,等會可以模擬搜索功能 <?php $params = [ 'index' => 'autofelix_db', 'type' => 'autofelix_table', //'id' => 1, #可以手動指定id,也可以不指定隨機生成 'body' => [ 'first_name' => '飛', 'last_name' => '兔', 'age' => 26 ] ]; $es->index($params); 六、 查詢所有數據 <?php $data = $es->search(); var_dump($data); 七、查詢單條數據 如果你在插入數據的時候指定了id,就可以查詢的時候加上id 如果你在插入的時候未指定id,系統將會自動生成id,你可以通過查詢所有數據后查看其id <?php $params = [ 'index' => 'autofelix_db', 'type' => 'autofelix_table', 'id' => //你插入數據時候的id ]; $data = $es->get($params); 八、搜索 ES精髓的地方就在于搜索 <?php $params = [ 'index' => 'autofelix_db', 'type' => 'autofelix_table', 'body' => [ 'query' => [ 'constant_score' => [ //非評分模式執行 'filter' => [ //過濾器,不會計算相關度,速度快 'term' => [ //精確查找,不支持多個條件 'first_name' => '飛' ] ] ] ] ] ]; $data = $es->search($params); var_dump($data); 九、測試代碼 基于Laravel環境,包含刪除數據庫,刪除文檔等操作 <?php use Elasticsearch\ClientBuilder; use Faker\Generator as Faker; /** * ES 的 php 實測代碼 */ class EsDemo { private $EsClient = null; private $faker = null; /** * 為了簡化測試,本測試默認只操作一個Index,一個Type */ private $index = 'autofelix_db'; private $type = 'autofelix_table'; public function __construct(Faker $faker) { /** * 實例化 ES 客戶端 */ $this->EsClient = ClientBuilder::create()->setHosts(['xxx.xxx.xxx.xxx'])->build(); /** * 這是一個數據生成庫 */ $this->faker = $faker; } /** * 批量生成文檔 * @param $num */ public function generateDoc($num = 100) { foreach (range(1,$num) as $item) { $this->putDoc([ 'first_name' => $this->faker->name, 'last_name' => $this->faker->name, 'age' => $this->faker->numberBetween(20,80) ]); } } /** * 刪除一個文檔 * @param $id * @return array */ public function delDoc($id) { $params = [ 'index' => $this->index, 'type' => $this->type, 'id' =>$id ]; return $this->EsClient->delete($params); } /** * 搜索文檔,query是查詢條件 * @param array $query * @param int $from * @param int $size * @return array */ public function search($query = [], $from = 0, $size = 5) { // $query = [ // 'query' => [ // 'bool' => [ // 'must' => [ // 'match' => [ // 'first_name' => 'Cronin', // ] // ], // 'filter' => [ // 'range' => [ // 'age' => ['gt' => 76] // ] // ] // ] // // ] // ]; $params = [ 'index' => $this->index, // 'index' => 'm*', #index 和 type 是可以模糊匹配的,甚至這兩個參數都是可選的 'type' => $this->type, '_source' => ['first_name','age'], // 請求指定的字段 'body' => array_merge([ 'from' => $from, 'size' => $size ],$query) ]; return $this->EsClient->search($params); } /** * 一次獲取多個文檔 * @param $ids * @return array */ public function getDocs($ids) { $params = [ 'index' => $this->index, 'type' => $this->type, 'body' => ['ids' => $ids] ]; return $this->EsClient->mget($params); } /** * 獲取單個文檔 * @param $id * @return array */ public function getDoc($id) { $params = [ 'index' => $this->index, 'type' => $this->type, 'id' =>$id ]; return $this->EsClient->get($params); } /** * 更新一個文檔 * @param $id * @return array */ public function updateDoc($id) { $params = [ 'index' => $this->index, 'type' => $this->type, 'id' =>$id, 'body' => [ 'doc' => [ 'first_name' => '張', 'last_name' => '三', 'age' => 99 ] ] ]; return $this->EsClient->update($params); } /** * 添加一個文檔到 Index 的Type中 * @param array $body * @return void */ public function putDoc($body = []) { $params = [ 'index' => $this->index, 'type' => $this->type, // 'id' => 1, #可以手動指定id,也可以不指定隨機生成 'body' => $body ]; $this->EsClient->index($params); } /** * 刪除所有的 Index */ public function delAllIndex() { $indexList = $this->esStatus()['indices']; foreach ($indexList as $item => $index) { $this->delIndex(); } } /** * 獲取 ES 的狀態信息,包括index 列表 * @return array */ public function esStatus() { return $this->EsClient->indices()->stats(); } /** * 創建一個索引 Index (非關系型數據庫里面那個索引,而是關系型數據里面的數據庫的意思) * @return void */ public function createIndex() { $this->delIndex(); $params = [ 'index' => $this->index, 'body' => [ 'settings' => [ 'number_of_shards' => 2, 'number_of_replicas' => 0 ] ] ]; $this->EsClient->indices()->create($params); } /** * 檢查Index 是否存在 * @return bool */ public function checkIndexExists() { $params = [ 'index' => $this->index ]; return $this->EsClient->indices()->exists($params); } /** * 刪除一個Index * @return void */ public function delIndex() { $params = [ 'index' => $this->index ]; if ($this->checkIndexExists()) { $this->EsClient->indices()->delete($params); } } /** * 獲取Index的文檔模板信息 * @return array */ public function getMapping() { $params = [ 'index' => $this->index ]; return $this->EsClient->indices()->getMapping($params); } /** * 創建文檔模板 * @return void */ public function createMapping() { $this->createIndex(); $params = [ 'index' => $this->index, 'type' => $this->type, 'body' => [ $this->type => [ '_source' => [ 'enabled' => true ], 'properties' => [ 'id' => [ 'type' => 'integer' ], 'first_name' => [ 'type' => 'text', 'analyzer' => 'ik_max_word' ], 'last_name' => [ 'type' => 'text', 'analyzer' => 'ik_max_word' ], 'age' => [ 'type' => 'integer' ] ] ] ] ]; $this->EsClient->indices()->putMapping($params); $this->generateDoc(); } } ~~~
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