一个php上传下载文件的源码

11. 
    
12. 
    
13. $dir = 'upload/';
    if(is_dir($dir)) {
    if ($dh = opendir($dir)) {
    while (($file = readdir($dh)) !== false) {
    if($file!="." && $file!="..") {
    echo "
    ";
    }
    }
    closedir($dh);
    }
    }
    ?>

    ".$file."

#----------------- 文件：upload_file.php

2. if ($_FILES["file"]["error"] > 0)
3. {
4. echo "Return Code: " . $_FILES["file"]["error"] . "
   ";
5. }
6. else
7. {
8. echo "Upload: " . $_FILES["file"]["name"] . "
   ";
9. echo "Type: " . $_FILES["file"]["type"] . "
   ";
10. echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb
    ";
11. echo "Temp file: " . $_FILES["file"]["tmp_name"] . "
    ";
13. if (file_exists("upload/" . $_FILES["file"]["name"]))
14. {
15. echo $_FILES["file"]["name"] . " already exists. ";
16. }
17. else
18. {
19. move_uploaded_file($_FILES["file"]["tmp_name"],
20. "upload/" . $_FILES["file"]["name"]);
21. echo "Stored in: " . "upload/" . $_FILES["file"]["name"];
22. }
23. }
24. header('HTTP/1.1 301 Moved Permanently');
25. header('Location:files.php');
26. ?>