php文件上传失败,原因未知~~(附代码,在线等)

<?php
$rootpath = "D:/www/up/";
if(!empty($_POST["up"])){
$arr = @$_FILES["movie"];
if($arr["error"] == 0){
move_uploaded_file($arr["tmp_name"],$rootpath.$arr["name"]);
echo "successful";
}
}
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
  <TITLE> New Document </TITLE>
</HEAD>
<BODY>
   <form action="" method="post" enctype="multipart/form-data">
<input type="file" name="movie" size=50>
<input type="submit" value="upload" name="up">
   </form>
</BODY>
</HTML>这个不会有问题

解决方案 »

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格式判断

         function get_ext($str,$dot=true){
     return substr($str,strrpos($str,'.')-strlen($str)+($dot?0:1));
        }
function check_img_valid($arrfiles){
                $arrvalidext = array(".jpg",".gif",".png",".jpeg");
if(!empty($arrfiles)){
foreach($arrfiles as $key => $value)
{
$ext = strtolower(get_ext($value["name"]));
if(!in_array($ext,$arrvalidext)){ return false; }
}
return true;
}else{
return false;
}
}
你把这个加在前面echo ($HTTP_POST_FILES['upload_file']['tmp_name']);
看看有结果么？
正确的写法是$_FILES['upload_file']['tmp_name']
全文改成如下：
<?php
$maxsize = 28480;
if (!$_REQUEST['submit'])
{
    //print_r($HTTP_POST_FILES);
    $error = " WRONG ";
}
echo ($_FILES['upload_file']['tmp_name']);
if (!is_uploaded_file($_FILES['upload_file']['tmp_name'])and !isset($error))
{
    $error = " <b>u must upload a file! </b> <br> <br>";
    unlink($_FILES['upload_file']['tmp_name']);
}
if (!is_uploaded_file($_FILES['upload_file']['size']) > $maxsize and !isset($error))
{
    $error = " <b>error, file must less than $maxsize bytes </b> <br> <br>";
    unlink($_FILES['upload_file']['tmp_name']);
}
if ($_FILES['upload_file']['type'] != "image/pjpeg" and
$_FILES['upload_file']['type'] != "image/gif" and
$_FILES['upload_file']['type'] != "image/jpeg" and !isset($error))
{
    $error = " <b>u must only upload .gif or .jpeg files. </b> <br> <br>";
    unlink($_FILES['upload_file']['tmp_name']);
}
if (!isset($error))
{
    move_uploaded_file($_FILES['upload_file']['tmp_name'],"../upload/files/".$_FILES['upload_file']['name']);
    unlink($_FILES['upload_file']['tmp_name']);
    print "thank for your upload <br>";
    exit;
}
else
{
  echo "$error";
}
?>
<html>
<head>
<title>upload file page </title>
</head><body>

<form enctype="multipart/form-data" action=" <?php echo ($_SERVER['PHP_SELF'])?>" method="POST">
    Send this file:
<input name="upload_file" type="file" />
     <input type="submit" name="submit" value="Send File" />
</form>
</body>
</html>
谢谢zmouki,问题已经解决了,但不是很清楚$HTTP_POST_***为什么不可以上传,知道的话可以解释一下吗??
默认状态下，php.ini文件中register_globals＝off,是关闭的，当改为ON时该变量可启用，不过有安全问题存在，还有就是我也不清楚的情况有可能会出现，PHP5后不建议这么写，具体的你可以上网查查，或者问问以前用过PHP4的老人，我没用过PHP4，所以具体的也很难和你说清楚。不好意思了。
不过，IIS6也不支持，这些是在网上找的，我也没用过。
register_globals使用详解
http://www.phpchina.com/28049/viewspace_8705.html
这会明白了,谢谢啊~~