//创建百度 xml
	public function createBaiduMap() {
		
		// 创建一个DOMDocument对象
		$dom = new DOMDocument('1.0','utf-8');
		// 创建根节点
		$dom ->formatOutput = true;
		
		
		//设置urlset
		$urlset = $dom ->createElement("urlset");
		
		//xmlns
		$xmlns = $dom ->createAttribute('xmlns');
		$xmlnsvalue = $dom ->createTextNode("http://www.sitemaps.org/schemas/sitemap/0.9");
		$xmlns -> appendChild($xmlnsvalue);	
		$urlset ->appendChild($xmlns);
		
		
		//xmlns:mobile
		$xmlns_mobile = $dom ->createAttribute('xmlns:mobile');
		$xmlns_mobilevalue = $dom ->createTextNode("http://www.baidu.com/schemas/sitemap-mobile/1/");
		$xmlns_mobile -> appendChild($xmlns_mobilevalue);	
		$urlset ->appendChild($xmlns_mobile);
		

		$dom ->appendChild($urlset);
		
		
		
		
		//要提交百度的地址
		$list = [
			"https://www.abc.cn",
			"https://www.abcd.cn",
		];
		
		

		
	
		
		
		
		
		
		foreach ($list as $k => $v) {
			// 建立根下子节点track
		    $track = $dom ->createElement("url");
		    $urlset ->appendChild($track);
		    // 建立track节点下元素
		    $loc = $dom ->createElement("loc");
		    $track ->appendChild($loc);
		    
		    $priority = $dom ->createElement("priority");
		    $track ->appendChild($priority);
		    
		    $lastmod = $dom ->createElement("lastmod");
		    $track ->appendChild($lastmod);
		    
		    $changefreq = $dom ->createElement("changefreq");
		    $track ->appendChild($changefreq);
		    
		    $mobile_mobile = $dom ->createElement("mobile:mobile");
		    
		    $type = $dom ->createAttribute('type');
			$typevalue = $dom ->createTextNode("pc,mobile");
			$type -> appendChild($typevalue);	
			$mobile_mobile ->appendChild($type);
			$track ->appendChild($mobile_mobile);
		    
		
		    
		    $text = $dom ->createTextNode($v);
		    $loc ->appendChild($text);
		    $date = date("Y-m-d",time());
		    $text = $dom ->createTextNode($date);
		    $lastmod ->appendChild($text);
		    $text = $dom ->createTextNode("weekly");
		    $changefreq ->appendChild($text);
		    $text = $dom ->createTextNode(1);
		    $priority ->appendChild($text);
			
		}
		
		
		
		$dom ->save(."/sitemap.xml"); //保存路径 绝对路径
		
		
		
	}