帝國利用PHP生成sitemap文件

這個代碼可以拿去直接用，但是有一點需要注意，如果網站文章太多了，那就需要修改部分代碼，百度好像規定了sitemap裏面的鏈接條數的。太多了不太友好

sitemap代碼

<?php  
/*引用文件*/  
require('e/class/connect.php');
require('e/class/db_sql.php');
require('e/data/dbcache/class.php');
/*建立數據庫鏈接 與 實例化類*/  
$link = db_connect();  
$empire=new mysqlquery();  
//header("Content-type:application/xml");
header("Content-type: text/html; charset=utf-8");
$operation = $_GET['operation'];
$current_url = explode('/',$_SERVER['PHP_SELF']);  
$current_script_name = end($current_url);  
if($operation && $operation == "makexml")
{
 $xml = generate_sitemp_xml();
 $result = save_xml('sitemap.xml',$xml);
 if($result)
 {
  echo '生成成功，<a href="sitemap.xml">點此查看</a>'; 
 }
 else
 {
  echo '生成失敗，<a href="'.$current_script_name.'">在來一次</a>！'; 
 }
}
else
{
 echo '歡迎使用紅穆Sitemap生成工具，請<a href="'.$current_script_name.'?operation=makexml">點此生成</a>！'; 
}

//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數據
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();//首頁
 $xml .= generate_class_xml();//欄目
 
 $query="select * from {$dbtbpre}ecms_news order by id desc limit 10000";
 $sql=$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;
}
//生成欄目鏈接XML數據
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;
}
//生成欄目鏈接XML數據
function generate_home_xml()
{
global $public_r; 
 $xml = '';
 $xml .= '  <url>' .PHP_EOL;
 $xml .= '    <loc>'.$public_r[newsurl].'</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;
}
/*關閉數據庫連接 與 釋放類*/  
db_close();  
$empire=null;
?>