RiSearch PHP and Redis are used together to achieve high-speed search

RiSearch PHP and Redis are used together to achieve high-speed search

Abstract:
In daily development, search function is a very common requirement. Traditional database search efficiency is low and cannot meet the requirements of high-speed search. This article introduces how to use RiSearch PHP and Redis to implement high-speed search functions, and provides relevant code examples.

1. Introduction
   RiSearch PHP is a high-performance full-text search engine based on Redis. Redis is an in-memory key-value storage database that is fast and efficient. RiSearch PHP takes advantage of the high-speed reading and writing performance of Redis to implement high-speed search functions. When using RiSearch PHP to search, you first need to index the content to be searched and store the index in Redis, and then query it through the search interface. This method can greatly improve the efficiency of search.
2. Installation and Configuration
   First you need to install Redis and RiSearch PHP extensions. You can download Redis from the official website and follow the relevant steps to install it. Then install the RiSearch PHP extension via Composer. Next configure RiSearch PHP and connect it to the Redis database. You can set the connection information in the PHP configuration file, as shown below:

RiSearch::config([
    'redis' => [
        'host' => '127.0.0.1',
        'port' => 6379,
    ],
]);

3. Indexing
   Before using RiSearch PHP to search, you first need to index the content you want to search. . Suppose we have a list of articles, each article contains title and content fields, and needs to be searched based on keywords. First, the content of these articles needs to be inserted into RiSearch's index one by one. This can be achieved through the following code:

<?php

use RiSearchClientIndexer;

$indexer = new Indexer();
$indexer->setIndex('articles');

$articles = [
    ['title' => '文章标题1', 'content' => '文章内容1'],
    ['title' => '文章标题2', 'content' => '文章内容2'],
    // ...
];

foreach ($articles as $article) {
    $indexer->insert($article['title'], $article['content']);
}

$indexer->commit();

The above code instantiates an index object through the Indexer class, and specifies the index name as articles, and then inserts articles one by one. Article title and content. After the insertion is completed, commit the index through the commit method.

4. Perform search
   After the index is established, you can search through RiSearch. Use the Search class provided by RiSearch PHP to perform search operations. The following is a sample code to perform a search:

<?php

use RiSearchClientSearch;

$search = new Search('articles');
$results = $search->search('关键词');

foreach ($results as $result) {
    echo '标题：' . $result['title'] . PHP_EOL;
    echo '内容：' . $result['content'] . PHP_EOL;
    echo PHP_EOL;
}

The above code instantiates a search object through the Search class, and specifies the search index name as articles, Then call the search method to search, passing in keywords as parameters. The search results will return a result set, and the searched content can be output by traversing the result set.

5. Advanced Search
   In addition to basic keyword search, RiSearch PHP also provides more advanced search functions. More precise searches can be achieved by setting search configuration parameters. The following are some commonly used advanced search examples:

• Search by fields: You can specify the fields to search for, such as title, content, etc.

$search = new Search('articles');
$search->addField('title')->addField('content');
$results = $search->search('关键词');

• Phrase search: Multiple keywords can be searched as a whole through quotation marks.

$search = new Search('articles');
$search->setPhraseQuery('关键词1 "关键词2"');
$results = $search->search();

For more advanced search functions, please refer to the official documentation of RiSearch PHP.

Summary:
This article introduces the use of RiSearch PHP and Redis to achieve high-speed search function. Through RiSearch PHP's indexing and search interface, search functions can be implemented quickly and efficiently. Using the high-speed reading and writing performance of Redis can greatly improve the efficiency of search. I hope this article will help everyone understand and apply RiSearch PHP and Redis to achieve high-speed search.

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