PHP中使用ElasticSearch最新实例讲解

composer require 'elasticsearch/elasticsearch'

require 'vendor/autoload.php';

use Elasticsearch\ClientBuilder;

$client = ClientBuilder::create()->setHosts(['172.16.55.53'])->build();

$params = [
  'index' => 'myindex', #index的名字不能是大写和下划线开头
  'body' => [
    'settings' => [
      'number_of_shards' => 2,
      'number_of_replicas' => 0
    ]
  ]
];
$client->indices()->create($params);

$params = [
  'index' => 'myindex',
  'type' => 'mytype',
  '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'
        ]
      ]
    ]
  ]
];
$client->indices()->putMapping($params);

$params = [
  'index' => 'myindex',
  'type' => 'mytype',
  //'id' => 1, #可以手动指定id，也可以不指定随机生成
  'body' => [
    'first_name' => '张',
    'last_name' => '三',
    'age' => 35
  ]
];
$client->index($params);

$data = $client->search();

$params = [
  'index' => 'myindex',
  'type' => 'mytype',
  'id' =>'zU65WWgBVD80YaV8iVMk'
];
$data = $client->get($params);

$query = [
  'query' => [
    'bool' => [
      'must' => [
        'match' => [
          'first_name' => '张',
        ]
      ],
      'filter' => [
        'range' => [
          'age' => ['gt' => 76]
        ]
      ]
    ]

  ]
];
$params = [
  'index' => 'myindex',
// 'index' => 'm*', #index 和 type 是可以模糊匹配的，甚至这两个参数都是可选的
  'type' => 'mytype',
  '_source' => ['first_name','age'], // 请求指定的字段
  'body' => array_merge([
    'from' => 0,
    'size' => 5
  ],$query)
];
$data = $this->EsClient->search($params);

<&＃63;php
use Elasticsearch\ClientBuilder;
use Faker\Generator as Faker;
/**
* ES 的 php 实测代码
*/
class EsDemo {
	private $EsClient = null;
	private $faker = null;
	/**
* 为了简化测试，本测试默认只操作一个Index，一个Type，
* 所以这里固定为 megacorp和employee
*/
	private $index = 'megacorp';
	private $type = 'employee';
	public function __construct(Faker $faker) {
		/**
* 实例化 ES 客户端
*/
		$this->EsClient = ClientBuilder::create()->setHosts(['172.16.55.53'])->build();
		/**
* 这是一个数据生成库，详细信息可以参考网络
*/
		$this->faker = $faker;
	}
	/**
* 批量生成文档
* @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)
			]);
		}
	}
	/**
* 删除一个文档
* @param $id
* @return array
*/
	public function delDoc($id) {
		$params = [
		'index' => $this->index,
		'type' => $this->type,
		'id' =>$id
		];
		return $this->EsClient->delete($params);
	}
	/**
* 搜索文档，query是查询条件
* @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，甚至这两个参数都是可选的
		'type' => $this->type,
		'_source' => ['first_name','age'], // 请求指定的字段
		'body' => array_merge([
		'from' => $from,
		'size' => $size
		],$query)
		];
		return $this->EsClient->search($params);
	}
	/**
* 一次获取多个文档
* @param $ids
* @return array
*/
	public function getDocs($ids) {
		$params = [
		'index' => $this->index,
		'type' => $this->type,
		'body' => ['ids' => $ids]
		];
		return $this->EsClient->mget($params);
	}
	/**
* 获取单个文档
* @param $id
* @return array
*/
	public function getDoc($id) {
		$params = [
		'index' => $this->index,
		'type' => $this->type,
		'id' =>$id
		];
		return $this->EsClient->get($params);
	}
	/**
* 更新一个文档
* @param $id
* @return array
*/
	public function updateDoc($id) {
		$params = [
		'index' => $this->index,
		'type' => $this->type,
		'id' =>$id,
		'body' => [
		'doc' => [
		'first_name' => '张',
		'last_name' => '三',
		'age' => 99
		]
		]
		];
		return $this->EsClient->update($params);
	}
	/**
* 添加一个文档到 Index 的Type中
* @param array $body
* @return void
*/
	public function putDoc($body = []) {
		$params = [
		'index' => $this->index,
		'type' => $this->type,
		// 'id' => 1, #可以手动指定id，也可以不指定随机生成
		'body' => $body
		];
		$this->EsClient->index($params);
	}
	/**
* 删除所有的 Index
*/
	public function delAllIndex() {
		$indexList = $this->esStatus()['indices'];
		foreach ($indexList as $item => $index) {
			$this->delIndex();
		}
	}
	/**
* 获取 ES 的状态信息，包括index 列表
* @return array
*/
	public function esStatus() {
		return $this->EsClient->indices()->stats();
	}
	/**
* 创建一个索引 Index （非关系型数据库里面那个索引，而是关系型数据里面的数据库的意思）
* @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);
	}
	/**
* 检查Index 是否存在
* @return bool
*/
	public function checkIndexExists() {
		$params = [
		'index' => $this->index
		];
		return $this->EsClient->indices()->exists($params);
	}
	/**
* 删除一个Index
* @return void
*/
	public function delIndex() {
		$params = [
		'index' => $this->index
		];
		if ($this->checkIndexExists()) {
			$this->EsClient->indices()->delete($params);
		}
	}
	/**
* 获取Index的文档模板信息
* @return array
*/
	public function getMapping() {
		$params = [
		'index' => $this->index
		];
		return $this->EsClient->indices()->getMapping($params);
	}
	/**
* 创建文档模板
* @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();
	}
}