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PHP ElasticSearch的使用
ElasticSearch是一个基于Lucene的稳定的、分布式、RESTFul的搜索引擎。其实所谓的RestFul就是它提供URL供你调用(建立索引和进行检索),不过直接这样使用实在是太凶残了。所以,它也提供了一系列client包,相当于将curl请求封装了,client包支持的语言包括Java、PHP、Python、Ruby和Perl等等。
PHP版的client包叫做elasticsearch-php,可以在Git_hub上下载。地址如下:https://github.com/elasticsearch/elasticsearch
要使用elasticsearch-php有如下三个要求:
1.PHP的版本在5.3.9以上,我用的是PHP5.3.23
2.在项目中使用Composor来管理包,下载地址如下:https://getcomposer.org/
3.在php.ini中开启curl和openssl
要使用elasticsearch,需要JDK的版本大于6,最好选择8吧,因为7有漏洞....
截一张需要的包图:
启动elasticsearch很简单,直接进入解压目录,运行elasticsearch.bat就可以了,看到最后console输出start,就启动成功了。
接下来介绍如何使用elasticsearch-php:
1.新建一个文件夹取名为test,此为项目文件夹
2.在里面放入一个命名为composer.json的文件,文件内容为:
- {
- "require":{
- "elasticsearch/elasticsearch" : "~1.2"
- }
- }
{ "require":{ "elasticsearch/elasticsearch" : "~1.2" } }
3.将composer.phar拷贝到test文件夹中,cd 到test文件夹,输入命令:php composer.phar install --no-dev 等待安装成功
这个时候test文件夹下面应该会出现vendor文件夹,里面有elasticsearch、composer、guzzle等文件夹,很多内容
4.这个时候,就可以使用elasticsearch进行建立索引和进行检索了
- <?php
- require_once(‘vendor/autoload.php‘);
- function get_conn(){
- $host = ‘ip‘;
- $dbname = ‘dbname‘;
- $user = ‘user‘;
- $passwd = ‘passwd‘;
- $conn = new PDO("pgsql:dbname=$dbname;host=$host",$user,$passwd);
- return $conn;
- }
- function create_index(){
- //Elastic search php client
- $client = new Elasticsearch\Client();
- $sql = "SELECT * FROM log";
- $conn = get_conn();
- $stmt = $conn->query($sql);
- $rtn = $stmt->fetchAll();
- //delete index which already created
- $params = array();
- $params[‘index‘] = ‘log_index‘;
- $client->indices()->delete($params);
- //create index on log_date,src_ip,dest_ip
- $rtnCount = count($rtn);
- for($i=0;$i<$rtnCount;$i++){
- $params = array();
- $params[‘body‘] = array(
- ‘log_date‘ => $rtn[$i][‘log_date‘],
- ‘src_ip‘ => $rtn[$i][‘src_ip‘],
- ‘dest_ip‘ => $rtn[$i][‘dest_ip‘]
- );
- $params[‘index‘] = ‘log_index‘;
- $params[‘type‘] = ‘log_type‘;
- //Document will be indexed to log_index/log_type/autogenerate_id
- $client->index($params);
- }
- echo ‘create index done!‘;
- }
- function search(){
- //Elastic search php client
- $client = new Elasticsearch\Client();
- $params = array();
- $params[‘index‘] = ‘log_index‘;
- $params[‘type‘] = ‘log_type‘;
- $params[‘body‘][‘query‘][‘match‘][‘src_ip‘] = ‘1.122.33.141‘;
- $rtn = $client->search($params);
- var_dump($rtn);
- }
- set_time_limit(0);
- //create_index();
- search();
- ?>
<?php require_once(‘vendor/autoload.php‘); function get_conn(){ $host = ‘ip‘; $dbname = ‘dbname‘; $user = ‘user‘; $passwd = ‘passwd‘; $conn = new PDO("pgsql:dbname=$dbname;host=$host",$user,$passwd); return $conn; } function create_index(){ //Elastic search php client $client = new Elasticsearch\Client(); $sql = "SELECT * FROM log"; $conn = get_conn(); $stmt = $conn->query($sql); $rtn = $stmt->fetchAll(); //delete index which already created $params = array(); $params[‘index‘] = ‘log_index‘; $client->indices()->delete($params); //create index on log_date,src_ip,dest_ip $rtnCount = count($rtn); for($i=0;$i<$rtnCount;$i++){ $params = array(); $params[‘body‘] = array( ‘log_date‘ => $rtn[$i][‘log_date‘], ‘src_ip‘ => $rtn[$i][‘src_ip‘], ‘dest_ip‘ => $rtn[$i][‘dest_ip‘] ); $params[‘index‘] = ‘log_index‘; $params[‘type‘] = ‘log_type‘; //Document will be indexed to log_index/log_type/autogenerate_id $client->index($params); } echo ‘create index done!‘; } function search(){ //Elastic search php client $client = new Elasticsearch\Client(); $params = array(); $params[‘index‘] = ‘log_index‘; $params[‘type‘] = ‘log_type‘; $params[‘body‘][‘query‘][‘match‘][‘src_ip‘] = ‘1.122.33.141‘; $rtn = $client->search($params); var_dump($rtn); } set_time_limit(0); //create_index(); search(); ?>
建立索引成功,可以看到“create index done!”
查询成功,可以看到返回的结果数组。
PHP ElasticSearch的使用