PHP操作Elasticsearch7.6
<p></p><div class="toc"><div class="toc-container-header">目录</div><ul><li>安装操作Elasticsearch的PHP库</li><li>PHP连接Elasticsearch</li><li>创建索引和映射</li><li>添加文档<ul><li>单一文档索引</li><li>批量(bulk)索引</li></ul></li><li>获取文档</li><li>更新文档<ul><li>部分更新</li><li>script更新</li></ul></li><li>删除文档</li></ul></div><p></p><p>首先打开Elasticsearch官网了解对应编程语言的API https://www.elastic.co/guide/en/elasticsearch/client/index.html</p>
<p><img src="https://img2020.cnblogs.com/blog/720430/202007/720430-20200728234336419-1212341033.png" alt="" loading="lazy"></p>
<p>点击 PHP API即可查看当前7.X版本的文档内容了</p>
<h3 id="安装操作elasticsearch的php库">安装操作Elasticsearch的PHP库</h3>
<p>我们使用TP5来作为示例</p>
<p>首先需要安装操作Elasticsearch的PHP客户端库，我们打开https://packagist.org/，搜索Elasticsearch。</p>
<p><img src="https://img2020.cnblogs.com/blog/720430/202007/720430-20200728234348237-508576528.png" alt="" loading="lazy"></p>
<p>这里有个Elasticsearch-PHP和Elasticsearch版本的对照表，我们需要根据我们自己使用的Elasticsearch的版本下载对应的Elasticsearch-PHP</p>
<p><img src="https://img2020.cnblogs.com/blog/720430/202007/720430-20200728234930255-1544421471.png" alt="" loading="lazy"></p>
<p>由于我的Elasticsearch版本是7.6.2，所以这里我们可以下载最新的Elasticsearch-PHP版本为7.8.0</p>
<p><img src="https://img2020.cnblogs.com/blog/720430/202007/720430-20200728234403729-481917117.png" alt="" loading="lazy"></p>
<p>我们进入到自己的项目目录里安装Elasticsearch-PHP</p>
<pre><code class="language-shell">composer require elasticsearch/elasticsearch=7.8.*
</code></pre>
<p><img src="https://img2020.cnblogs.com/blog/720430/202007/720430-20200728234414330-863501386.png" alt="" loading="lazy"></p>
<h3 id="php连接elasticsearch">PHP连接Elasticsearch</h3>
<p>官方配置文档：https://www.elastic.co/guide/en/elasticsearch/client/php-api/current/configuration.html</p>
<pre><code class="language-php">$hosts = [
'127.0.0.1:9200', //IP+端口
];
$client = \Elasticsearch\ClientBuilder::create()->setHosts($hosts)->build();
var_dump($client);
</code></pre>
<h3 id="创建索引和映射">创建索引和映射</h3>
<p>创建一个名为users的索引同时创建映射，并制定映射中各个字段的类型</p>
<pre><code class="language-php">$hosts = [
'127.0.0.1:9200', //IP+端口
];
$client = \Elasticsearch\ClientBuilder::create()->setHosts($hosts)->build();
$params = [
'index' => 'users',
'body' => [
'settings' => [
'number_of_shards' => 3,
'number_of_replicas' => 2
],
'mappings' => [
'_source' => [
'enabled' => true
],
'properties' => [
'name' => [
'type' => 'keyword'
],
'age' => [
'type' => 'integer'
],
'mobile' => [
'type' => 'text'
],
'email' => [
'type' => 'text'
],
'birthday' => [
'type' => 'date'
],
'address' => [
'type' => 'text'
]
]
]
]
];
// Create the index with mappings and settings now
$response = $client->indices()->create($params);
dump($response);
</code></pre>
<p><img src="https://img2020.cnblogs.com/blog/720430/202007/720430-20200728234434429-305984252.png" alt="" loading="lazy"></p>
<h3 id="添加文档">添加文档</h3>
<p>当你要在 Elasticsearch 增加文档时，你就需要索引 JSON 文档。JSON 文档会映射 PHP 关联数组，因为 PHP 关联数组可以 encode 为 JSON 数据格式。</p>
<p>因此在 Elasticsearch-PHP 中你可以传递关联数组给客户端来索引文档。我们会概述几种方法来增加文档到 Elasticsearch。</p>
<h4 id="单一文档索引">单一文档索引</h4>
<p>当索引一个文档时，你可以提供一个 ID 或者让 Elasticsearch 自动生成。</p>
<p>现在有如下数据，我们将其添加到users索引中</p>
<pre><code class="language-php">$hosts = [
'127.0.0.1:9200', //IP+端口
];
$client = \Elasticsearch\ClientBuilder::create()->setHosts($hosts)->build();
$params = [
'index' => 'users',
'id' => 1,
'body'=> [
'name' => '张三',
'age' => 10,
'email' => 'zs@gmail.com',
'birthday' => '1990-12-12',
'address'=> '北京'
]
];
$client->index($params);
</code></pre>
<p>通过Kibana可以查看到已经成功添加到Elasticsearch中</p>
<p><img src="https://img2020.cnblogs.com/blog/720430/202007/720430-20200728234453448-1172206078.png" alt="" loading="lazy"></p>
<h4 id="批量bulk索引">批量(bulk)索引</h4>
<p>Elasticsearch 也支持批量（bulk）索引文档。bulk API 要求提供 JSON 格式的 action/元数据 键值对。在 PHP 中构建批量文档数据也是相似的。你首先要创建一个 action 数组对象（如 <code>index</code> 对象），然后你还要创建一个 body 对象。而 PHP 程序则重复上述操作构建文档数据。</p>
<pre><code class="language-php">$hosts = [
'127.0.0.1:9200', //IP+端口
];
$client = \Elasticsearch\ClientBuilder::create()->setHosts($hosts)->build();
$arr = [
['name' => '张三', 'age' => 10, 'email' => 'zs@gmail.com', 'birthday' => '1990-12-12', 'address' => '北京'],
['name' => '李四', 'age' => 20, 'email' => 'ls@gmail.com', 'birthday' => '1990-10-15', 'address' => '河南'],
['name' => '白兮', 'age' => 15, 'email' => 'bx@gmail.com', 'birthday' => '1970-08-12', 'address' => '杭州'],
['name' => '王五', 'age' => 25, 'email' => 'ww@gmail.com', 'birthday' => '1980-12-01', 'address' => '四川'],
];
foreach ($arr as $key => $document) {
$params['body'][] = [
'index' => [
'_index' => 'users',
'_id' => $key
]
];
$params['body'][] = [
'name' => $document['name'],
'age' => $document['age'],
'email' => $document['email'],
'birthday' => $document['birthday'],
'address'=> $document['address']
];
}
if (isset($params) && !empty($params)) {
$client->bulk($params);
}
</code></pre>
<p><img src="https://img2020.cnblogs.com/blog/720430/202007/720430-20200728234511260-947447075.png" alt="" loading="lazy"></p>
<p>如果数据量不多可以用上面的方法，如果数据量很多的话，我们就可以考虑分次添加</p>
<h3 id="获取文档">获取文档</h3>
<p>Elasticsearch 提供实时获取文档的方法。这意味着只要文档被索引且客户端收到消息确认后，你就可以立即在任何的分片中检索文档。Get 操作通过 <code>index/type/id</code> 方式请求一个文档信息：</p>
<pre><code class="language-php">$hosts = [
'127.0.0.1:9200', //IP+端口
];
$client = \Elasticsearch\ClientBuilder::create()->setHosts($hosts)->build();
$params = [
'index' => 'users',
'id' => 1
];
$response = $client->get($params);
dump($response);
</code></pre>
<p><img src="https://img2020.cnblogs.com/blog/720430/202007/720430-20200728234524494-1799607806.png" alt="" loading="lazy"></p>
<h3 id="更新文档">更新文档</h3>
<h4 id="部分更新">部分更新</h4>
<p>如果你要部分更新文档（如更改现存字段，或添加新字段），你可以在 body 参数中指定一个 doc 参数。这样 doc 参数内的字段会与现存字段进行合并。</p>
<pre><code class="language-php">$hosts = [
'127.0.0.1:9200', //IP+端口
];
$client = \Elasticsearch\ClientBuilder::create()->setHosts($hosts)->build();
$params = [
'index' => 'users',
'id' => 1,
'body'=> [
'doc' => [
'mobile' => '17612345678'
]
]
];
$response = $client->update($params);
dump($response);
</code></pre>
<p><img src="https://img2020.cnblogs.com/blog/720430/202007/720430-20200728234534192-266905723.png" alt="" loading="lazy"></p>
<p><img src="https://img2020.cnblogs.com/blog/720430/202007/720430-20200728234540049-466038384.png" alt="" loading="lazy"></p>
<h4 id="script更新">script更新</h4>
<p>有时你要执行一个脚本来进行更新操作，如对字段进行自增操作或添加新字段。为了执行一个脚本更新，你要提供脚本命令和一些参数：</p>
<p>例如：将李四的年龄增加5岁</p>
<pre><code class="language-php">$hosts = [
'127.0.0.1:9200', //IP+端口
];
$client = \Elasticsearch\ClientBuilder::create()->setHosts($hosts)->build();
$params = [
'index' => 'users',
'id' => '1',
'body'=> [
'script' => 'ctx._source.age += 5',
]
];
$response = $client->update($params);
dump($response);
</code></pre>
<p><img src="https://img2020.cnblogs.com/blog/720430/202007/720430-20200728234552848-1825291556.png" alt="" loading="lazy"></p>
<p>通过Kibana查看发现年龄已经增加了5岁</p>
<p><img src="https://img2020.cnblogs.com/blog/720430/202007/720430-20200728234559915-1516280302.png" alt="" loading="lazy"></p>
<h3 id="删除文档">删除文档</h3>
<p>通过指定文档的 <code>/index/type/id</code> 路径可以删除文档：</p>
<pre><code class="language-php">$hosts = [
'127.0.0.1:9200', //IP+端口
];
$client = \Elasticsearch\ClientBuilder::create()->setHosts($hosts)->build();
$params = [
'index' => 'users',
'id' => 2,
];
$response = $client->delete($params);
dump($response);
</code></pre>
<p><img src="https://img2020.cnblogs.com/blog/720430/202007/720430-20200728234608826-639817672.png" alt="" loading="lazy"></p>
<blockquote>
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</blockquote><br><br>
来源：https://www.cnblogs.com/itbsl/p/13394621.html
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