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                        /PHP實現文件上傳與下載

文件類型不符前端上傳DOC PDF文件一直exit文件類型不符以下是前端PHP和doaction

<!doctype?html>
<html>
<head>
<meta?charset="utf-8">
<title>無標題文檔</title>
</head>

<body>
<form?action="doAction.php"?method="post"?enctype="multipart/form-data">
<input?type="hidden"?name="MAX_FILE_SIZE"?value="10000000000">
上傳項目文件：
<input?type="file"?name="myFile"?id="File"?/><br/>
<input?type="submit"?value="上傳"/>???
</body>
</html>



/*DOACTION.PHP*/

<?php
header('content-type:text/html;charset=utf-8');
print_r($_FILES);

$file_name=$_FILES['myFile']['name'];
$file_type=$_FILES['myFile']['type'];
$file_tmpname=$_FILES['myFile']['tmp_name'];
$file_size=$_FILES['myFile']['size'];
$file_error=$_FILES['myFile']['error'];
$maxsize=3145728;//限制上傳最大的字節數
$allowed_file_type=array('doc','docx','wps','pdf');
$flag=true;//檢測上傳文件是否符合要求的返回值
//move_uploaded_file($file_tmpname,"php/".$file_name);
//copy($file_tmpname,"php/".$file_name);

if($file_error==0)
{
	if($file_size>$maxsize)
	{exit('上傳文件過大，請上傳不大于30M的文件。');}
	
	?????$ext=pathinfo($file_tmpname,PATHINFO_EXTENSION);
	?????if(!in_array($ext,$allowed_file_type))
	?????{exit("文件的類型不符！");}
	????
	?????if(!is_uploaded_file($file_tmpname))
	?????{exit("文件不是通過HTTP?POST方式上傳上來的");}
		?//確保文件名不重復
		?$uniName=md5(uniqid(microtime(true),ture)).'.'.$ext;
		?//設置上傳文件存儲目錄
		?$path='upload';
		?$dst=$path.'/'.$uniName;
		?
	?????if(@move_uploaded_file($file_tmpname,$dst))
	?????{echo"文件上傳成功";}
	?????else
	?????{echo"文件上傳失敗";}
????????
}
else
{
	switch($file_error){
		case?1:
		?????echo"BEYOND?THE?MAXSIZE?OF?ALLOWED?FILE?SETTING";break;
	????case?2:
		?????echo"超過表單MAX_FILE_SIZE限制大小";break;
		case?3:
		?????echo"文件被部分上傳";break;
		case?4:	?
		?????echo"沒有選擇上傳文件"	?;break;
	????case?6:
		?????echo"沒有找到臨時目錄";break;
		case?8:
		?????echo"系統錯誤";break;
	}
}
?>