How to use Elastic Search with PHP – Tutorial
- Digital Engineering
How to use Elastic Search with PHP – Tutorial
Searching is an important part of many application but it can be painful if you have to deal with large database. Recently I got to work with Elastic Search, a very efficient search tool that provides lots of developer friendly functionality. I have created my own class to integrate it with PHP. You can install Elastic search for php and find detailed document with the help of below links.
http://www.elastic.co/guide/en/elasticsearch/client/php-api/master/_installation_2.html
https://github.com/elastic/elasticsearch-php
In this class I have write functions to insert, update and delete data in Elastic search using bulk operation. I will update it will search functionality very soon.
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require 'vendor/autoload.php'; //autoload.php from elastic-search class ElasticSearch { private $_client; public function __construct(){ if ($this->_client === NULL) $this->connect(); return $this->_client; } /** * Initialize Elastic Search Object */ public function connect() { $params = array(); $params['hosts']=array('HOST_NAME:PORT'); $params['connectionParams']['auth']=array('USERNAME','PASSWORD','Basic'); $this->_client = new Elasticsearch\Client($params); } public function getInstance() { return $this->_client; } /** * Update already existing data in elastic search. * We can update date for multiple ids. * Data format must be like as below * $params will contain ‘inedx’ and ‘type’ parameter for data to be updated. * $data=array( _id1=>array( 'field1'=>'value1', 'field2'=>'value2', ... ), _id2=> array( 'field1'=>'value1', 'field2'=>'value2', ... ), ... ); * _id => updateArray */ public function updateData($data,$params) { try { if(!isset($params['index']) || !isset($params['type'])) die("Unable to update Elastic. Either index or type is not defined"); $client = $this->_client; foreach ($data as $_id => $update) { $params['body'][] = array( 'update' => array( '_id' => $_id ) ); $params['body'][] = array( 'doc_as_upsert' => 'true', 'doc' => $update ); } $responses = $client->bulk($params); } catch(exception $e) { //die($e->getMessage()); } } /** * Add data in elastic search * $data format must be same as in previous function (i.e. _id=insertArray) * @param array() $data :- data to be inserted * @param array() $params:- contains index and type information * @return Add Provided data to Elastic search document for given Listing and type */ public function addElasticData($data, $params) { try{ if(!isset($params['index']) || !isset($params['type'])) die("Unable to update Elastic. Either index or type is not defined"); $client = $this->_client; foreach ($data as $_id => $insert) { $params['body'][] = array( 'index' => array( '_id' => $_id ) ); $params['body'][] = $insert; } $responses = $client->bulk($params); return $responses; } catch(Exception $e){ //die($e->getMessage()); } } /** * This function will delete all data for given Index and Type in Elastic search */ public function deleteElastic($params) { if(!isset($params['index']) || !isset($params['type'])) die("Unable to delete data. Either index or type is not defined"); try{ $client = $this->_client; unset($params['type']); $client->indices()->delete($params); } catch (Exception $e) { //die($e->getMessage()); } } } |
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