如何实现文件上传 ?
  文件上传界面   
 
if($UploadAction){
$UploadAction=0; 
$TimeLimit=60; 
/*设置超时限制时间默认时间为 30s,设置为0时为不限时 */ 
set_time_limit($TimeLimit); 
If(($Upfile != "none")&& 
($Upfile != "")) 
{ 
$Filepath="d:\web\web\php\test"; //上载文件存放路径
$FileName=$Filepath.$Upfile_name; 
if($Upfile_size <1024) //上载文件大小 
{$FileSize = (string)$Upfile_size . "字节";} 
elseif($Upfile_size <(1024 * 1024)) 
{
$FileSize = number_format((double)($Upfile_size / 1024), 1) . " KB";
} 
else 
{ 
$FileSize = number_format((double)($Upfile_size/(1024*1024)),1)."MB"; 
} 
if(!file_exists($FileName)) 
{ 
if(copy($Upfile,$FileName)) 
{unlink($Upfile); 
echo "
\n"; 
echo "文件 $Upfile_name 已上载成功!";
echo "
\n";
echo "文件位置:$FileName";
echo "
\n";
echo "文件大小:$FileSize";
echo "
\n";
} 
else 
{echo "文件 $Upfile_name上载失败!"; } 
} 
else 
{echo "文件 $Upfile_name已经存在!"; } 
} 
else 
{echo "你没有选择任何文件上载!"; } 
set_time_limit(30); //恢复默认超时设置 
}
?> 
 		
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