帝国CMS生成sitemap实现代码分享：提升SEO优化效果

因为对帝国CMS的sitemap插件不太满意，所以自己写了个sitemap生成工具，在sitemap中放了首页链接、栏目页链接和内容页链接，然后生成XML文件并且提交到百度站长工具，本文中的代码是需要生动生成的，我自己是在Linux中用cron写的定时任务，每天固定时间生成一次，先这样吧~

代码如下:

<?php
/*引用文件*/
require('e/class/connect.php');
require('e/class/db_sql.php');
require('e/data/dbcache/class.php');</p> <p>/*建立数据库链接 与 实例化类*/
$link = db_connect();
$empire=new mysqlquery(); </p> <p>//header("Content-type:application/xml");
header("Content-type: text/html; charset=utf-8");</p> <p>$operation = $_GET['operation'];
$current_url = explode('/',$_SERVER['PHP_SELF']);
$current_script_name = end($current_url); </p> <p>if($operation && $operation == "makexml")
{
$xml = generate_sitemp_xml();
$result = save_xml('sitemap.xml',$xml);
if($result)
{
echo '生成成功，<a href="sitemap.xml">点此查看</a>';
}
else
{
echo '生成失败，<a href="'.$current_script_name.'">在来一次</a>！';
}
}
else
{
echo '欢迎使用微笑的鱼Sitemap生成工具，请<a href="'.$current_script_name.'?operation=makexml">点此生成</a>！';
}</p> <p></p> <p>
//保存到文件
function save_xml($filename, $text) {
if (!$filename || !$text)
return false;

@chmod($filename,0777);
if ($fp = fopen($filename, "w")) {
if (@fwrite($fp, $text)) {
fclose($fp);
return true;
} else {
fclose($fp);
return false;
}
}
return false;
}
//生成Sitemap XML数据
function generate_sitemp_xml()
{
global $dbtbpre,$empire;

$xml = '';
$xml .= '<?xml version="1.0" encoding="utf-8"?>' .PHP_EOL;
$xml .= '<urlset>' .PHP_EOL;
$xml .= generate_home_xml();//首页
$xml .= generate_class_xml();//栏目

$query="select * from {$dbtbpre}ecms_news order by id desc limit 100";
$sql=$empire->query($query);
while($r=$empire->fetch($sql))
{
$titleurl=sys_ReturnBqTitleLink($r);

$xml .= ' <url>' .PHP_EOL;
$xml .= ' <loc>'.$titleurl.'</loc>' .PHP_EOL;
$xml .= ' <lastmod>'.strftime('%Y-%m-%d',$r['newstime']).'</lastmod>' .PHP_EOL;
$xml .= ' <changefreq>daily</changefreq>' .PHP_EOL;
$xml .= ' <priority>0.8</priority>' .PHP_EOL;
$xml .= ' </url>' .PHP_EOL;

}
$xml .= '</urlset>' .PHP_EOL;

return $xml;
}
//生成栏目链接XML数据
function generate_class_xml()
{
global $dbtbpre,$empire,$class_r;
$xml = '';

$sql=$empire->query("SELECT * FROM {$dbtbpre}enewsclass WHERE islast=1");
while($r=$empire->fetch($sql))
{
$infor=$empire->fetch1("SELECT newstime FROM {$dbtbpre}ecms_".$class_r[$r[classid]][tbname]." WHERE 
classid='$r[classid]' ORDER BY newstime DESC LIMIT 1");
$class_url=sys_ReturnBqClassname($r, 9);

$xml .= ' <url>' .PHP_EOL;
$xml .= ' <loc>'.$class_url.'</loc>' .PHP_EOL;
$xml .= ' <lastmod>'.strftime('%Y-%m-%d',time()).'</lastmod>' .PHP_EOL;
$xml .= ' <changefreq>daily</changefreq>' .PHP_EOL;
$xml .= ' <priority>0.8</priority>' .PHP_EOL;
$xml .= ' </url>' .PHP_EOL;

}

return $xml;
}
//生成栏目链接XML数据
function generate_home_xml()
{
$xml = '';
$xml .= ' <url>' .PHP_EOL;
$xml .= ' <loc>https://www.jb51.net</loc>' .PHP_EOL;
$xml .= ' <lastmod>'.strftime('%Y-%m-%d',time()).'</lastmod>' .PHP_EOL;
$xml .= ' <changefreq>daily</changefreq>' .PHP_EOL;
$xml .= ' <priority>0.8</priority>' .PHP_EOL;
$xml .= ' </url>' .PHP_EOL;

return $xml;</p> <p>}</p> <p>/*关闭数据库连接 与 释放类*/
db_close();
$empire=null;
?

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