PHP上传单张图片

PHP上传单张图片到服务器，如下代码：

php  
session_start();  
include("conn.php");?> 
html> 
head> 
meta http-equiv="Content-Type" content="text/html; charset=gb2312"> 
title>上传单图片到服务器并显示 - www.cxybl.comtitle> 
head> 
 
body> 
table width="355" height="240" border="0" align="center" cellpadding="0" cellspacing="0"> 
  tr> 
    td width="106" height="100"> td> 
    td width="196"> td> 
    td width="31"> td> 
  tr> 
form name="form1" method="post" action="index_ok.php" enctype="multipart/form-data"> 
  tr> 
    td height="30" align="center"> td> 
    td valign="middle">input name="images" type="file" id="images2" size="15"> 
     input type="hidden" name="MAX_FILE_SIZE" value="30000">   td> 
    td> td> 
  tr> 
  tr> 
    td height="55"> td> 
    td>input type="submit" name="Submit" value="提交">td> 
    td> td> 
  tr> 
 form> 
  tr> 
    td height="55"> td> 
    td> td> 
    td> td> 
  tr> 
table> 
table width="355" border="1" align="center" cellpadding="0" cellspacing="0"> 
 php $query="select * from tb_image2 where id order by data desc limit 2"; 
 $result=mysql_query($query); 
 if($result==true){ 
 while($myrow=mysql_fetch_array($result)){  
 ?>tr> 
    td width="100" align="center">php echo $myrow[data];?>td> 
    td width="255" align="center">img src="" width="200" height="150">td> 
  tr> 
  php }}?> 
table> 
body> 
html> 

conn.php:

$id=mysql_connect('localhost','root','root'); 
mysql_select_db("db_database12",$id); 
mysql_query("set names gb2312"); 
?> 

index_ok.php:

session_start();  
include("conn.php");?> 

 if($Submit=="提交"){ 
$data=date("Y-m-d"); 
$filesize=$_FILES['images']['size']; 
if($filesize>1000000) 
  {echo "";}else{ 
$path = 'upfiles/'. $_FILES['images']['name']; 
if (move_uploaded_file($_FILES['images']['tmp_name'],$path)) {  
    $query1="insert into tb_image2(path,data,image_name)values('$path','$data','$images')"; 
    $result1=mysql_query($query1); 
    if($result1=true){  
    echo "上传成功!!"; 
    echo "";  
    }else{echo "文件上传失败!!"; 
          echo "";} 
}}} 
?>