用Laravel生成sitemap

//sitemap
Route::get('/sitemap/m/{type}.xml', 'SitemapController@siteMap');

<?php
namespace App\Http\Controllers\M;
use App\Http\Controllers\BaseController;
use App\Model\Bbs\Article;
use App\Model\Bbs\Ask;
use App\Model\Bbs\Thread;
use App\Model\Main\Video;
use App\Model\Garage\SeriesInfoModel;
//todo 补充其他模块
use Carbon\Carbon;
use Illuminate\Support\Facades\Cache;
class SitemapController extends BaseController{
    //todo 写一个汇总文件
    public function siteMap($type){
        $cacheKey = "site-" . $type;
        //2小时缓存 保证加载速度
        if (Cache::has($cacheKey)) {
            $siteMap = Cache::get($cacheKey);
        } else {
            $siteMap = $this->buildSiteMap($type);
            Cache::add($cacheKey, $siteMap, 120);
        }
        return response($siteMap)
            ->header('Content-type', 'text/xml');
    }
    /**
     * Build the Site Map
     */
    protected function buildSiteMap($type){
        $sitemapInfo = [];
        switch ($type) {
            case 'video':
                $sitemapInfo = $this->getVideoInfo();
                break;
            case 'article':
                $sitemapInfo = $this->getArticleInfo();
                break;
            case 'bbs':
                $sitemapInfo = $this->getBbsInfo();
                break;
            case 'ask':
                $sitemapInfo = $this->getAskInfo();
                break;
            case 'series':
                $sitemapInfo = $this->getSeriesInfo();//车型库
                break;
        }
        $lastmod = $sitemapInfo[0]['pub_time'];
        $xml = [];
        $xml[] = '<?xml version="1.0" encoding="UTF-8"?' . '>';
        $xml[] = '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:mobile="http://www.baidu.com/schemas/sitemap-mobile/1/">';
        $xml[] = '  <url>';
        $xml[] = "    <loc>https://m.xxx.com</loc>";
        $xml[] = "    <lastmod>$lastmod</lastmod>";
        $xml[] = '    <changefreq>daily</changefreq>';
        $xml[] = '    <priority>0.8</priority>';
        $xml[] = '  </url>';
        foreach ($sitemapInfo as $sitemap) {
            $xml[] = '  <url>';
            $xml[] = "    <loc>{$sitemap['url']}</loc>";
            $xml[] = "    <mobile:mobile type=\"mobile\"/>";
            $xml[] = "    <lastmod>{$sitemap['pub_time']}</lastmod>";
            $xml[] = "  </url>";
        }
        $xml[] = '</urlset>';
        return join("\n", $xml);
    }
    /**
     * Return all the posts as $url => $date
     */
    protected function getVideoInfo(){
        $videos = Video::where('pub_time', '<=', Carbon::now())
            ->where('published', 2)
            ->where('is_del', 0)
            ->orderBy('id', 'desc')
            ->pluck('pub_time', 'id')
            ->all();
        $res = $article = [];
        foreach ($videos as $id => $pub_time) {
            $article['id'] = $id;
            $article['pub_time'] = substr($pub_time, 0, 10);
            $article['url'] = "https://m.xxx.com/video_" . $id . ".html";
            $res[] = $article;
        }
        return $res;
    }
    protected function getArticleInfo(){
        $articles = Article::where('pub_time', '<=', Carbon::now())
            ->where('published', 2)
            ->where('is_del', 0)
            ->orderBy('id', 'desc')
            ->pluck('pub_time', 'id')
            ->take(5000)
            ->all();
        $res = $article = [];
        foreach ($articles as $id => $pub_time) {
            $article['id'] = $id;
            $article['pub_time'] = substr($pub_time, 0, 10);
            $article['url'] = "https://m.xxx.com/news/article_" . $id . ".html";
            $res[] = $article;
        }
        return $res;
    }
    protected function getBbsInfo(){
        $articles = Thread::where('visible', 1)
            ->where('is_del', 0)
            ->orderBy('id', 'desc')
            ->pluck('dateline', 'id')
            ->take(10000)
            ->all();
        $res = $article = [];
        foreach ($articles as $id => $pub_time) {
            $article['id'] = $id;
            $article['pub_time'] = substr($pub_time, 0, 10);
            $article['url'] = "https://m.xxx.com/bbs/thread_" . $id . ".html";
            $res[] = $article;
        }
        return $res;
    }
    protected function getAskInfo(){
        $articles = Ask::where('state', 1)
            ->orderBy('id', 'desc')
            ->pluck('dateline', 'id')
            ->take(10000)
            ->all();
        $res = $article = [];
        foreach ($articles as $id => $pub_time) {
            $article['id'] = $id;
            $article['pub_time'] = substr($pub_time, 0, 10);
            $article['url'] = "https://m.xxx.com/ask_" . $id . ".html";
            $res[] = $article;
        }
        return $res;
    }
    //车型库
    protected function getSeriesInfo(){
        $articles = SeriesInfoModel::where('status', 1)
            ->where('is_stop', 0)
            ->pluck('name', 'id')
            ->all();
        $res = $article = [];
        foreach ($articles as $id => $pub_time) {
            $article['id'] = $id;
            $article['pub_time'] = date('Y-m-d', time());
            $article['url'] = "https://m.xxx.com/series/" . $id . "/details";
            $res[] = $article;
        }
        return $res;
    }
}