自定义站点地图的xml文件

1 编写Sitemap类

<?php

class Sitemap
{
    public $encoding;       // xml编码

    /**
     * 初始化
     * @param string $encoding xml编码
    */
    public function __construct($encoding = 'UTF-8')
    {
        $this->encoding = $encoding;
    }

    /**
     * 创建RSS文件内容
     * @param array $items 文章内容
     * return string rss字符串内容
    */
    public function createSiteMap($items)
    {
        // 获取头部信息
        $header  = $this->getHeader();
        // 获取文章信息
        $items   = $this->getItems($items);
        return str_replace('<item>', $items, $header);
    }

    /**
     * 获取item信息
     * @param array $articles 文章内容，二维数组，格式[['loc' => '', 'priority' => '', 'lastmod' => '', 'changefreq' => ''],...]
     * return string
    */
    public function getItems($articles = [])
    {
        $items = "";
        foreach ($articles as $k => $v) {
            $items .= "\t\t".'<url>'."\n";
            $items .= "\t\t\t".'<mobile:mobile type="pc,mobile"/>'."\n";
            $items .= "\t\t\t".'<loc>'.$v['loc'].'</loc>'."\n";
            $items .= "\t\t\t".'<priority>'.$v['priority'].'</priority>'."\n";
            $items .= "\t\t\t".'<lastmod>'.$this->getDataTime($v['lastmod']).'</lastmod>'."\n";
            $items .= "\t\t\t".'<changefreq>'.$v['changefreq'].'</changefreq>'."\n";
            $items .= "\t\t".'</url>'."\n";
        }
        return $items;
    }


    // 获取头部信息
    public function getHeader()
    {
        $header  = '<?xml version="1.0" encoding="'.$this->encoding.'"?>'."\n";
        $header .= '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:mobile="http://www.baidu.com/schemas/sitemap-mobile/1/">'."\n".'<item>'."\n".'</urlset>'."\n";
        return $header;
    }

    /**
     * 格式化时间
     * @param string $datetime 时间戳
     * return string 时间，格式：2024-01-12 16:45:30
    */
    public function getDataTime($datetime)
    {
        return date('Y-m-d H:i:s', $datetime);
    }
}

2 使用Sitemap类

$encoding       = 'UTF-8';
$rss = new Sitemap($encoding);
$items          = [
    ['loc' => 'https://www.cyanhui.com', 'priority' => '1.0', 'lastmod' => '1677290677', 'changefreq' => 'Always'],
    ['loc' => 'https://www.cyanhui.com/detail/324.html', 'priority' => '0.8', 'lastmod' => '1677290675', 'changefreq' => 'Always']
];
header('Content-Type: application/xml; charset=UTF-8');
echo $rss->createSiteMap($items);

3 查看结果