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一、安装通过composer安装
composer require 'elasticsearch/elasticsearch'
二、使用
创建ES类
require ‘vendor/autoload.php’;
//如果未设置密码
$es = \Elasticsearch\ClientBuilder::create()->setHosts([‘xxx.xxx.xxx.xxx’])->build();
//如果es设置了密码
$es = \Elasticsearch\ClientBuilder::create()->setHosts([‘http://username:password@xxx.xxx.xxx.xxx:9200’])->build()
index 对应关系型数据(以下简称MySQL)里面的数据库,而不是对应MySQL里面的索引
'autofelix_db', #index的名字不能是大写和下划线开头
'body' => [
'settings' => [
'number_of_shards' => 5,
'number_of_replicas' => 0
]
]
];
$es->indices()->create($params);
四、创建表
在MySQL里面,光有了数据库还不行,还需要建立表,ES也是一样的ES中的type对应MySQL里面的表ES6以前,一个index有多个type,就像MySQL中一个数据库有多个表一样但是ES6以后,每个index只允许一个type在定义字段的时候,可以看出每个字段可以定义单独的类型在first_name中还自定义了 分词器 ik,这是个插件,是需要单独安装的
'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、插入数据
现在数据库和表都有了,可以往里面插入数据了在ES里面的数据叫文档可以多插入一些数据,等会可以模拟搜索功能
'autofelix_db',
'type' => 'autofelix_table',
//'id' => 1, #可以手动指定id,也可以不指定随机生成
'body' => [
'first_name' => '飞',
'last_name' => '兔',
'age' => 26
]
];
$es->index($params);
六、 查询所有数据
search();
var_dump($data);
七、查询单条数据 如果你在插入数据的时候指定了id,就可以查询的时候加上id如果你在插入的时候未指定id,系统将会自动生成id,你可以通过查询所有数据后查看其id 'autofelix_db',
'type' => 'autofelix_table',
'id' => //你插入数据时候的id
];
$data = $es->get($params);
八、搜索
ES精髓的地方就在于搜索
'autofelix_db',
'type' => 'autofelix_table',
'body' => [
'query' => [
'constant_score' => [ //非评分模式执行
'filter' => [ //过滤器,不会计算相关度,速度快
'term' => [ //精确查找,不支持多个条件
'first_name' => '飞'
]
]
]
]
]
];
$data = KaTeX parse error: Expected 'EOF', got '&' at position 4: es-&̲gt;search(params);
var_dump($data);
基于Laravel环境,包含删除数据库,删除文档等 *** 作
/**
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 *** 作一个Index,一个Type*/
private $index = ‘autofelix_db’;
private $type = ‘autofelix_table’;
public function __construct(Faker $faker)
{
/**
* 实例化 ES 客户端
/
$this->EsClient = ClientBuilder::create()->setHosts([‘xxx.xxx.xxx.xxx’])->build();
/*
* 这是一个数据生成库
*/
$this->faker = $faker;
}
/**
批量生成文档@param n u m ∗ / p u b l i c f u n c t i o n g e n e r a t e D o c ( num */ public function generateDoc( num∗/publicfunctiongenerateDoc(num = 100) {foreach (range(1,$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’ => KaTeX parse error: Expected 'EOF', got '&' at position 6: this-&̲gt;type, '…id
];
return KaTeX parse error: Expected 'EOF', got '&' at position 6: this-&̲gt;EsClient->…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’ => s i z e ] , size ], size],query)
];
return KaTeX parse error: Expected 'EOF', got '&' at position 6: this-&̲gt;EsClient->…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 KaTeX parse error: Expected 'EOF', got '&' at position 6: this-&̲gt;EsClient->…params);
}
/**
获取单个文档@param $id@return array*/
public function getDoc($id) {
$params = [
‘index’ => $this->index,
‘type’ => KaTeX parse error: Expected 'EOF', got '&' at position 6: this-&̲gt;type, '…id
];
return KaTeX parse error: Expected 'EOF', got '&' at position 6: this-&̲gt;EsClient->…params);
}
/**
更新一个文档@param $id@return array*/
public function updateDoc($id) {
$params = [
‘index’ => $this->index,
‘type’ => KaTeX parse error: Expected 'EOF', got '&' at position 6: this-&̲gt;type, '…id,
‘body’ => [
‘doc’ => [
‘first_name’ => ‘张’,
‘last_name’ => ‘三’,
‘age’ => 99
]
]
];
return KaTeX parse error: Expected 'EOF', got '&' at position 6: this-&̲gt;EsClient->…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
];
KaTeX parse error: Expected 'EOF', got '&' at position 6: this-&̲gt;EsClient->…params);
}
/**
删除所有的 Index*/
public function delAllIndex() {
$indexList = KaTeX parse error: Expected 'EOF', got '&' at position 6: this-&̲gt;esStatus()['…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
]
]
];
KaTeX parse error: Expected 'EOF', got '&' at position 6: this-&̲gt;EsClient->…params);
}
/**
检查Index 是否存在@return bool*/
public function checkIndexExists() {
$params = [
‘index’ => $this->index
];
return KaTeX parse error: Expected 'EOF', got '&' at position 6: this-&̲gt;EsClient->…params);
}
/**
删除一个Index@return void*/
public function delIndex() {
$params = [
‘index’ => KaTeX parse error: Expected 'EOF', got '&' at position 6: this-&̲gt;index ]; i…this->checkIndexExists()) {
KaTeX parse error: Expected 'EOF', got '&' at position 6: this-&̲gt;EsClient->…params);
}
}
/**
获取Index的文档模板信息@return array*/
public function getMapping() {
$params = [
‘index’ => $this->index
];
return KaTeX parse error: Expected 'EOF', got '&' at position 6: this-&̲gt;EsClient->…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’
]
]
]
]
];
KaTeX parse error: Expected 'EOF', got '&' at position 6: this-&̲gt;EsClient->…params);
$this->generateDoc();
}
}
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