请问这个PHP调用的MYSQL数据为什么乱码了？

function writeStatistic($sql,$txt_name){	$filename="".$txt_name;//注意修改文件的路径	if (file_exists($filename)) {		$fp=fopen($filename,"a+");	}else{		$fp=fopen($filename,"w+");	}	$text=$sql."\r\n";	fwrite($fp,$text);	fclose($fp);}/*** 向指定文件写入字符集设置句柄** 参数: string $txt_name : 指定文件名* 返回: void* 作用域: public*/function writeStatistic_set_name($txt_name){    $set_name="";	//转化为utf-8编码		$filename="".$txt_name;//注意修改文件的路径	if (file_exists($filename)) {		unlink($filename);		$fp=fopen($filename,"a+");	}else{		$fp=fopen($filename,"w+");	}	$text=$set_name."\r\n";	fwrite($fp,$text);	fclose($fp);}$nowDate = date("Y-m-d");$txt_name='sitemap.xml';writeStatistic_set_name($txt_name);$sql="select * from jieqi_article_article ORDER BY lastupdate DESC";$db->query($sql);for($i=1;$i<= $db->num_rows();$i++){	$db->next_record();	$siteid = $db->f(siteid);	$haha = _;	$articleid = $db->f(articleid);	$newname = $db->f(articlename);	$newid = $db->f(lastchapterid);	$nowDate = $db ->f(lastupdate);	$nowDate = date("Y-m-d H:m:s",$nowDate);	$url = "		http://www.1.org/html/$articleid/$newid.html 	$nowDate	always	1.0	$newname	";	//转化为utf-8编码	$url = utf8_encode($url);	writeStatistic($url,$txt_name);}$db->free();$over='';writeStatistic($over,$txt_name);print "Google Sitemap生成结束!
点击这里查看";exit;?>

回复讨论(解决方案)

你用错了函数！
$url = utf8_encode($url);
要改为
$url = iconv(;gbk', 'utf-8', $url);

当然 $url 中的数据编码要对

其实你的 $db 设置字符集为 utf8，就不需要转码了