File upload with file, unable to find the solution in the TMP directory

Upload files with file, file not found in TMP directory
The code is as follows:


upload.php
if ($_files["file" ["error"] > 0)
{
echo "Return Code:". $_files["File" ["Error"]. "
";
}
Else
{
echo "Upload:". $_files["File" ["Name"]. "
";
echo "Type:". $_files["File" ["type"]. "
";
echo "Size:". ($_files["File" ["Size"]/1024). The Kb
";
echo "Temp file:". $_files["File" ["Tmp_name"]. "
";

if (file_exists ("upload/". $_files["File" ["Name"]))
{
echo $_files["File" ["Name"]. "already exists.";
}
Else
{
Move_uploaded_file ($_files["file"] ["Tmp_name"],
"Upload/". $_files["File" ["name"]);
echo "Stored in:". " Upload/". $_files["File" ["Name"];
}
}
?>

Operation Result:
Upload:jdk-6u34-windows-x64.exe
Type:application/octet-stream
size:61154.484375 Kb
Temp file:f:\xampp\tmp\phpcb11.tmp

Warning:move_uploaded_file (Upload/jdk-6u34-windows-x64.exe): Failed to open stream:no such file or directory in F:\XAMPP \htdocs\test\qwe.php on line 26

Warning:move_uploaded_file (): Unable to move ' F:\xampp\tmp\phpCB11.tmp ' to ' Upload/jdk-6u34-windows-x64.exe ' in f:\ xampp\htdocs\test\qwe.php on line 26
Stored In:upload/jdk-6u34-windows-x64.exe

Tangled for a long time, the platform environment is installed under the Windows Platform XAMPP integrated environment
and want to know why ....


------Solution--------------------
Directory upload does not exist
------Solution--------------------
Possible causes:
1. The path is not correct.
2. folder does not have permissions.
Add DirName (__file__) to see.


if (File_exists (DirName (__file__). /upload/". $_files["File" ["Name"]))
------Solution--------------------
Failed to open stream:no such file or directory

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