The combination of RiSearch PHP and word segmentation technology enables efficient Chinese search

The combination of RiSearch PHP and word segmentation technology to achieve efficient Chinese search requires specific code examples

In recent years, with the development of Internet technology, more and more Chinese Content is stored in various types of databases. However, traditional English search engines have relatively weak support for Chinese, and often have problems such as word segmentation errors or missing words, resulting in low accuracy of search results. In order to solve this problem, we can use the combination of RiSearch PHP and word segmentation technology to achieve efficient Chinese search.

RiSearch PHP is a full-text index library based on Redis, which can quickly index and search Chinese texts. Word segmentation technology improves the accuracy and efficiency of search by dividing Chinese text into independent words. The following is a specific code example of how to use RiSearch PHP and word segmentation technology to achieve efficient Chinese search:

First, we need to install the extension libraries of Redis and RiSearch PHP. It can be installed through the following command:

$ pecl install redis
$ pecl install rixsearch

Next, introduce the RiSearch PHP extension library into the PHP code and connect the Redis service:

<?php
require 'rii.php';

$redis = new Redis();
$redis->connect('127.0.0.1', 6379);

Then, create a RiSearch object and set the word segmenter :

$search = new RiSearch($redis);
$search->setTokenizer(RiSearch::TOKENIZER_CJK);

Before searching, you need to create an index. Suppose we have a database table named "articles", which contains two fields: "id" and "title". We can create an index as follows:

$stmt = $pdo->prepare('SELECT * FROM articles');
$stmt->execute();

while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
    $search->addDocument($row['id'], $row['title']);
}

$search->commit();

Finally, we can use the search method of RiSearch Search and get matching results:

$results = $search->search('中文搜索');

foreach ($results as $result) {
    echo $result['id'] . ': ' . $result['title'] . "
";
}

Through the above code, we successfully implemented the combination of RiSearch PHP and word segmentation technology to achieve efficient Chinese search.

It should be noted that in order to make the word segmentation results more accurate, we can configure the tokenizer attribute of RiSearch. RiSearch provides a variety of word breakers to choose from, such as TOKENIZER_CJK, TOKENIZER_WHITESPACE, etc. You can choose the most suitable word segmenter according to actual needs.

To sum up, the combination of RiSearch PHP and word segmentation technology brings an effective solution to Chinese search. By properly configuring the word segmenter and creating the correct index, we can achieve efficient and accurate Chinese searches. I hope the above code examples can help everyone understand the use of RiSearch PHP and the implementation of Chinese search.

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