php生成百度sitemap站点地图类函数实例

<?php
/
  SiteMap接口类
 /
 
class SitemapAction extends Action{
private static $baseURL = ''; //URL地址
private static $askMobileUrl = 'http://m.xxx./ask/'; //问答移动版地址
private static $askPcUrl = "http://.xxx./ask/";   //问答pc地址
private static $askZonePcUrl = "http://.xxx./ask/jingxuan/"; //问答精选Pc链接
private static $askZoneMobileUrl = "http://m.xxx./ask/jx/"; //问答精选移动版链接
        //问答setmaps
public function askSetMap(){
header('Content-type:text/html;charset=utf-8');
//获取问题列表
$maxid = 0;    //索引文件最大id
$minid = 0;    //索引文件最小id
$psize = 1000; //数据库每次取数量
$maxXml = 5000; //xml写入记录数量
$where = array();
//读取索引文件
$index = APP_PATH.'setmapxml/Index.txt';
//关联setmaps路径
$askXml = "../siteditu/ask/ask.xml";
if(!file_exists($index)){
$fp=fopen("$index", "w+");
if ( !is_writable($index) ){
die("文件:" .$index. "不可写，请检查！");
}
fclose($fp);
}else{
//index.txt文件说明 0:xml文件名称(从1开始)、1:文件最大id、2:文件最小id、3:文件当前记录数
$fp = file($index);
$string = $fp[count($fp)-1];//显示一行
$arr = explode(',', $string);
}
//索引文件数量是否小于$maxXml
//如果为第一次运行
if(!$arr[1]){
$bs=1;
$filename=0;
}else{
if($arr && $arr[3]<$maxXml){
$filename = $arr[0];
$psize = $maxXml-$arr[3]>$psize?$psize:($maxXml-$arr[3]);
$bs = 0;
}else{
$filename = $arr[0]+1;
$bs=1;
}
}
$maxid = empty($arr[1])?0:$arr[1];
$minid = empty($arr[2])?0:$arr[2];
echo "文件名称".$filename.".xml"."<br/ >";
echo "最大id:".$maxid."<br />";
echo "最小id:".$minid."<br />";
echo "xml写入最大记录".$maxXml."<br />";
echo "数据库每次读取数量".$psize."<br />";
$list = self::$questionObj->getQuestionSetMap($where,$maxid,$psize);
if(count($list)<=0){
echo 1;exit;
}
$record = $arr[3]+count($list); //索引文件写入记录数
$indexArr = array('filename'=>$filename,'maxid'=>$maxid,'minid'=>$minid,'maxXml'=>$record);
$start = '<?xml version="1.0" encoding="UTF-8" ?> '.chr(10);
$start.="<urlset xmlns=\"http://.sitemaps./schemas/sitemap/0.9\" xmlns:mobile=\"http://.baidu./schemas/sitemap-mobile/1/\">".chr(10);
                                $start.="</urlset>";
foreach($list as $k=>$qinfo){
if($k==0)
$indexArr['minid']=$qinfo['id'];
$qinfo['lastmod'] = substr($qinfo['lasttime'],0,10);
$qinfo['mobielurl'] = self::$askMobileUrl.$qinfo['id'].'.html'; //移动版链接
$qinfo['pcurl'] = self::$askPcUrl.$qinfo['id'].'-p1.html'; //pc版链接
$xml.=$this->askMapMobileUrl($qinfo); //移动版
$xml.=$this->askMapPcUrl($qinfo);     //pc版
}
$maxid = end($list);
$indexArr['maxid'] = $maxid['id'];
//更新索引文件
if($bs==0){
//更新一行
$txt = file($index);
$txt[count($txt)-1] = $indexArr[filename].','.$indexArr[maxid].','.$indexArr['minid'].','.$indexArr['maxXml']."\r\n";
$str = join($txt);
if (is_writable($index)) {
if (!$handle = fopen($index, 'w')) {
echo "不能打开文件 $index";exit;
exit;
}
if (fwrite($handle, $str) === FALSE) {
echo "不能写入到文件 $index";exit;
exit;
}
echo "成功地写入文件$index";
fclose($handle);
} else {
echo "文件 $index 不可写";exit;
}
fclose($index);
}elseif($bs==1){
//新加入一行
$fp = fopen($index,'a');
$num = count($list);
$string = $indexArr[filename].','.$indexArr[maxid].','.$indexArr['minid'].','.$num."\r\n";
if(fwrite($fp,$string)===false){
echo "追加新行失败。。。";exit;
}else{
echo "追加成功<br />";
//更新sitemap索引文件
$xmlData="<?xml version=\"1.0\"  encoding=\"UTF-8\" ?>".chr(10);
$xmlData.="<sitemapindex>".chr(10);
$xmlData.="</sitemapindex>";
if(!file_exists($askXml))
file_put_contents($askXml,$xmlData);
$fileList = file($askXml);
$fileCount = count($fileList);
$setmapxml = "http://.xxx./ask/setmapxml/{$filename}.xml";//正常问题链接
$txt = $this->setMapIndex($setmapxml);
$fileList[$fileCount-1]=$txt."</sitemapindex>";
$newContent = '';
foreach($fileList as $v){
$newContent.= $v;
}
if(!file_put_contents($askXml,$newContent)) exit('无法写入数据');
echo '已经写入文档' . $askXml;
}
fclose($fp);
}
$filename =  APP_PATH.'setmapxml/'.$filename.'.xml';
                //更新到xml文件中,增加结尾
                if(!file_exists($filename))
                        file_put_contents($filename,$start);
                $xmlList = file($filename);
                $xmlCount = count($fileList);
                $xmlList[$xmlCount-1]=$xml."</urlset>";
                $newXml = '';
foreach($xmlList as $v){
$newXml.= $v;
}
if(!file_put_contents($filename, $newXml))exit("写入数据错误");
                else
                    echo "写入数据成功<br />";
}
//问答移动版xml
private function askMapMobileUrl($data){
$xml = '';
if(is_array($data)&&!empty($data)){
$xml .="<url>".chr(10);
if($data['id'])
$xml.='<loc>'.$data['mobielurl'].'</loc>'.chr(10);//移动版链接
$xml.="<mobile:mobile type=\"mobile\"/>".chr(10);
if($data['lastmod'])
$xml.='<lastmod>'.$data['lastmod'].'</lastmod>'.chr(10);
$xml.='<changefreq>daily</changefreq>'.chr(10);
$xml.='<priority>0.8</priority>'.chr(10);  
$xml.="</url>".chr(10);
return $xml;
}
}
//问答pc版xml
private function askMapPcUrl($data){
$xml = '';
if(is_array($data)&&!empty($data)){
$xml.='<url>'.chr(10);
if($data['id'])
$xml.='<loc>'.$data['pcurl'].'</loc>'.chr(10);//pc版链接
if($data['lastmod'])
$xml.='<lastmod>'.$data['lastmod'].'</lastmod>'.chr(10);
$xml.='<changefreq>daily</changefreq>'.chr(10);
$xml.='<priority>0.8</priority>'.chr(10);
$xml.='</url>'.chr(10);
return $xml;
}
}
//setmaps索引文件
private function setMapIndex($filename){
$xml = '';
$xml.="<sitemap>".chr(10);
$xml.="<loc>{$filename}</loc>".chr(10);
$xml.="<lastmod>".date("Y-m-d",time())."</lastmod>".chr(10);
$xml.="</sitemap>".chr(10);
return $xml;
}
}
?>

<?xml version="1.0"  encoding="UTF-8" ?>
<sitemapindex>
<sitemap>
<loc>http://.xxx./ask/setmapxml/0.xml</loc>
<lastmod>2014-05-12</lastmod>
</sitemap>
<sitemap>
<loc>http://.xxx./ask/setmapxml/1.xml</loc>
<lastmod>2014-05-12</lastmod>
</sitemap>
</sitemapindex>

<?xml version="1.0" encoding="UTF-8" ?>
<urlset xmlns="http://.sitemaps./schemas/sitemap/0.9" xmlns:mobile="http://.baidu./schemas/sitemap-mobile/1/">
<url>
<loc>http://m.xxx./ask/7460.html</loc>
<mobile:mobile type="mobile"/>
<lastmod>2013-01-11</lastmod>
<changefreq>daily</changefreq>
<priority>0.8</priority>
</url>
<url>
</urlset>