PHP uses PHPAnalysis to extract Chinese word segmentation of keywords

Requirement: When doing SEO keywords, you need to extract keywords from the title or text.

1.PHPAnalysis download address

https://github.com/feixuekeji/PHPAnalysis

After downloading, unzip it and put it in the extend directory (taking tp5 as an example, other directories are also acceptable)

2. Encapsulation

<?PHP
/**
 * @auther: xxf
 * Date: 2019/8/19
 * Time: 11:04
 */
 
namespace WordAnalysis;
 
/**
 * 中文分词提取关键字
 */
class Analysis
{
    /**
     * Notes:关键字提取
     * @auther: xxf
     * Date: 2019/8/19
     * Time: 11:09
     * @param string $content
     * @param int $num 获取数量
     * @return string
     */
    public static function getKeywords($content = "",$num = 3) {
        if (empty ( $content )) {
            return '';
        }
 
        require_once 'PHPanalysis.class.PHP';
 
 
        PHPAnalysis::$loadInit = false;
        $pa = new PHPAnalysis ( 'utf-8', 'utf-8', false );
        $pa->LoadDict ();
        $pa->SetSource ($content);
        $pa->StartAnalysis ( true );
 
        $tags = $pa->GetFinallyKeywords ($num); // 获取文章中的n个关键字
        return $tags;//返回关键字
    }
 
}

use

$data['seo']['keyword'] = Analysis::getKeywords($article_info['title']);