PHP中使用Elasticsearch的方法

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课程推荐→：《elasticsearch全文搜索实战》（实战视频）

来自课程《千万级数据并发解决方案（理论+实战）》

PHP中使用Elasticsearch

composer require elasticsearch/elasticsearch

会自动加载合适的版本！我的php是5.6的，它会自动加载5.3的elasticsearch版本！

Using version ^5.3 for elasticsearch/elasticsearch
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 4 installs, 0 updates, 0 removals
  - Installing react/promise (v2.7.0): Downloading (100%)         
  - Installing guzzlehttp/streams (3.0.0): Downloading (100%)         
  - Installing guzzlehttp/ringphp (1.1.0): Downloading (100%)         
  - Installing elasticsearch/elasticsearch (v5.3.2): Downloading (100%)         
Writing lock file
Generating autoload files

简单使用

<?php

class MyElasticSearch
{
    private $es;
    // 构造函数
    public function __construct()
    {
        include(&#39;../vendor/autoload.php&#39;);
        $params = array(
            &#39;127.0.0.1:9200&#39;
        );
        $this->es = \Elasticsearch\ClientBuilder::create()->setHosts($params)->build();
    }

    public function search() {
        $params = [
            &#39;index&#39; => &#39;megacorp&#39;,
            &#39;type&#39; => &#39;employee&#39;,
            &#39;body&#39; => [
                &#39;query&#39; => [
                    &#39;constant_score&#39; => [ //非评分模式执行
                        &#39;filter&#39; => [ //过滤器，不会计算相关度，速度快
                            &#39;term&#39; => [ //精确查找，不支持多个条件
                                &#39;about&#39; => &#39;谭&#39;
                            ]
                        ]

                    ]
                ]
            ]
        ];

        $res = $this->es->search($params);

        print_r($res);
    }
}

<?php
require "./MyElasticSearch.php";

$es = new MyElasticSearch();

$es->search();

执行结果

Array
(
    [took] => 2
    [timed_out] => 
    [_shards] => Array
        (
            [total] => 5
            [successful] => 5
            [skipped] => 0
            [failed] => 0
        )

    [hits] => Array
        (
            [total] => 1
            [max_score] => 1
            [hits] => Array
                (
                    [0] => Array
                        (
                            [_index] => megacorp
                            [_type] => employee
                            [_id] => 3
                            [_score] => 1
                            [_source] => Array
                                (
                                    [first_name] => 李
                                    [last_name] => 四
                                    [age] => 24
                                    [about] => 一个PHP程序员，热爱编程，谭康很帅，充满激情。
                                    [interests] => Array
                                        (
                                            [0] => 英雄联盟
                                        )

                                )

                        )

                )

        )

)

下面是官方的一些样例：

初始化

require '../vendor/autoload.php';
use Elasticsearch\ClientBuilder;
$client = ClientBuilder::create()->build();

增加配置

$hosts = [
    '127.0.01:9200',         // IP + Port
];

$client = ClientBuilder::create()           // Instantiate a new ClientBuilder
->setHosts($hosts)      // Set the hosts
->build();              // Build the client object

或

$hosts = [
    '127.0.01:9200',         // IP + Port
];

$clientBuilder = ClientBuilder::create();   // Instantiate a new ClientBuilder
$clientBuilder->setHosts($hosts);           // Set the hosts
$client = $clientBuilder->build();          // Build the client object

插入一个文档

// Index 一个文档
$params = [
    'index' => 'my_index',
    'type' => 'my_type',
    'id' => 'my_id',
    'body' => ['testField' => 'abc']
];

$response = $client->index($params);
print_r($response);

获取一个文档

$params = [
    'index' => 'my_index',
    'type' => 'my_type',
    'id' => 'my_id'
];

$response = $client->get($params);
print_r($response);

查询一个文档

$params = [
    'index' => 'my_index',
    'type' => 'my_type',
    'body' => [
        'query' => [
            'match' => [
                'testField' => 'abc'
            ]
        ]
    ]
];

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

删除一个文档

$params = [
    'index' => 'my_index',
    'type' => 'my_type',
    'id' => 'my_id'
];

$response = $client->delete($params);
print_r($response);

结果如下

Array
(
    [_index] => my_index
    [_type] => my_type
    [_id] => my_id
    [_version] => 3
    [result] => deleted
    [_shards] => Array
        (
            [total] => 2
            [successful] => 1
            [failed] => 0
        )

    [_seq_no] => 2
    [_primary_term] => 1
)

删除一个索引

$deleteParams = [
    'index' => 'my_index'
];
$response = $client->indices()->delete($deleteParams);
print_r($response);

创建一个索引

$params = [
    'index' => 'my_index',
    'body' => [
        'settings' => [
            'number_of_shards' => 2,
            'number_of_replicas' => 0
        ]
    ]
];

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

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