　{
　　if ($_FILES['file']['error'] == UPLOAD_ERR_OK) // 没有错误
　　{
　　　$filename = $_FILES['file']['name']; // 文件名
　　　move_uploaded_file($_FILES['file']['tmp_name'], $upload_dir.'/'.$filename);
　　　// 处理的主过程-转移文件到 $upload_dir
　　　$result = 'OK';
　　}
　　elseif ($_FILES['file']['error'] == UPLOAD_ERR_INI_SIZE)
　　　$result_msg = 'The uploaded file exceeds the upload_max_filesize directive in php.ini';
　　else
　　　$result_msg = 'Unknown error';
　}

　echo '＜html＞＜head＞＜title＞-＜/title＞＜/head＞＜body＞';
　echo '＜script language="JavaScript" type="text/javascript"＞'."\n";
　echo 'var parDoc = window.parent.document;';
　'
　if ($result == 'OK')
　{
　　echo 'parDoc.getElementById("upload_status").value = "file successfully uploaded";';
　　echo 'parDoc.getElementById("filename").value = "'.$filename.'";';
　　echo 'parDoc.getElementById("filenamei").value = "'.$filename.'";';
　　echo 'parDoc.getElementById("upload_button").disabled = false;';
　}
　else
　{
　　echo 'parDoc.getElementById("upload_status").value = "ERROR: '.$result_msg.'";';
　}

　echo "\n".'＜/script＞＜/body＞＜/html＞';
　exit();
}

function safehtml($s)
{
　$s=str_replace("&", "&", $s);
　$s=str_replace("＜", "<", $s);
　$s=str_replace("＞", ">", $s);
　$s=str_replace("'", "'", $s);
　$s=str_replace("\"", """, $s);
　return $s;
}

if (isset($_POST['description']))
{
　$filename = $_POST['filename'];
　$size = filesize($upload_dir.'/'.$filename);
　$date = date('r', filemtime($upload_dir.'/'.$filename));
　$description = safehtml($_POST['description']);

　$html =＜＜＜END
　＜html＞＜head＞＜title＞{$filename} [uploaded by IFRAME Async file uploader]＜/title＞＜/head＞
　＜body＞
　　＜h1＞{$filename}＜/h1＞
　　＜p＞This is a file information page for your uploaded file. Bookmark it, or send to anyone...＜/p＞
　　＜p＞Date: {$date}＜/p＞
　　＜p＞Size: {$size} bytes＜/p＞
　　＜p＞Description:

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