How to use PHP and Xunsearch to sort and deduplicate search results

How to use PHP and Xunsearch to sort and deduplicate search results

Search engines play an important role in modern applications. They can quickly filter out qualified results from large amounts of data. result. However, duplication and repetition problems often appear in search engine results, which affects user experience and search accuracy. This article will introduce how to use PHP and Xunsearch search engine to perform duplication and deduplication operations on search results to improve the quality of search results.

Xunsearch is an open source, high-performance full-text search engine that supports searches in multiple languages ​​such as Chinese, English, and Japanese, and has powerful filtering and sorting functions. We can use the powerful functions of Xunsearch to achieve duplication and deduplication of search results.

First, we need to install and configure Xunsearch on the server. For specific operations, please refer to the official documentation of Xunsearch. Once the installation is complete, we can use PHP to interact with Xunsearch.

Suppose our application needs to search for relevant articles from the article library and display them to the user. We first need to build a search form so that users can enter keywords to search. The HTML code of the form is as follows:

<form action="search.php" method="GET">
    <input type="text" name="keyword" placeholder="请输入关键字">
    <input type="submit" value="搜索">
</form>

Next, we write PHP code in the search.php file to process the search request and display the search results. First, we need to introduce the relevant library files of Xunsearch:

require_once '/path/to/xunsearch/sdk/php/lib/XS.php';

Then, we need to initialize a Xunsearch search object:

$xs = new XS('index'); // 替换为你自己的索引文件名
$search = $xs->search;

In the search results, we need to exclude duplicate articles. In order to achieve this function, we can use Xunsearch's facet (faceted search) function to obtain a list of article IDs. Next, we can use PHP's in_array function to determine whether an article already exists in the search results. If it already exists, filter it out. The complete PHP code is as follows:

require_once '/path/to/xunsearch/sdk/php/lib/XS.php';

$xs = new XS('index');
$search = $xs->search;

$keyword = $_GET['keyword'];
$search->setQuery($keyword);
$search->setLimit(10);

$search->setFacets(array("id")); // 设置分面结果

$result = $search->search();
$docs = $result->docs;

$articleIds = array();
foreach($docs as $doc) {
    $articleIds[] = $doc->id;
}

$filteredResults = array();
foreach ($docs as $doc) {
    if (!in_array($doc->id, $articleIds)) {
        $filteredResults[] = $doc;
    }
}

foreach ($filteredResults as $doc) {
    echo $doc->title . "<br>";
    echo $doc->content . "<br>";
}

Through the above code, we can implement duplication and deduplication operations on search results, thereby improving the quality of search results. Users can enter keywords to search and get corresponding results after duplication ranking and deduplication.

It should be noted that the above code is just a simple example, and actual application may need to be appropriately modified and optimized according to specific needs. In addition, we can also use other functions of Xunsearch, such as sorting, highlighting, etc., to further improve the quality of search results and user experience.

To sum up, this article introduces how to use PHP and Xunsearch to perform duplication and deduplication of search results. By leveraging the powerful functions of Xunsearch, we can easily achieve duplication and deduplication and improve the quality of search results. I hope this article can be helpful to everyone.

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