PHP：什么时候临时上传的文件被删除？ [英] PHP: When does the temporary uploaded files get deleted?

问题描述

我正在运行WAMP服务器。使用PHP进行文件上传我可以看到
$ b $ p $ $ FILES [tmp_name] =>字符串'C：\wamp\tmp\phpD382.tmp'（长度= 23）

我去那个文件夹，它是空。我确定我的显示隐藏文件是从我的文件夹选项，但我没有看到它。它到底在哪里？

除了什么时候被删除呢？如果我不移动那个文件？例如，如果我正在上传文件，并且文件上传到了一半，我决定关闭浏览器，文件会发生什么变化？什么时候服务器知道要删除临时文件？

解决方案

只要您的PHP脚本完成执行并重新保存到定义位置

使用直接PHP，无框架的示例

http://www.php.net/manual/en/features.file-upload.post-method.php

  $ uploaddir ='/ var / www / uploads /'; 
 $ uploadfile = $ uploaddir。基名（$ _ FILES [ userfile的] [名称]）; 
 
 echo'< pre>'; 
 if（move_uploaded_file（$ _ FILES ['userfile'] ['tmp_name']，$ uploadfile））{
 echo文件有效，已成功上传。 
} else {
 echo可能的文件上传攻击！\\\
; 
} 
 
 echo'这是一些更多的调试信息：'; 
 print_r（$ _ FILES）; 
 
打印< / pre>; 
 
？> 
  

I am running WAMP server. On file upload using PHP I see

$_FILES[tmp_name] => string 'C:\wamp\tmp\phpD382.tmp' (length=23)

I go to that folder and it's empty. I made sure my 'show hidden files' is on from my 'folders option' but I don't see it. Where is it exactly?

Besides when does it get deleted? If I don't move that file? For an instance if I'm uploading a file and the file uploaded halfway and I decided to close that browser what happens to the file? When does the server know to delete that temp file?

解决方案

As soon as your PHP script finishes executing and re-saving to the defined location

Example using straight PHP, no framework

http://www.php.net/manual/en/features.file-upload.post-method.php

$uploaddir = '/var/www/uploads/';
$uploadfile = $uploaddir . basename($_FILES['userfile']['name']);

echo '<pre>';
if (move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile)) {
    echo "File is valid, and was successfully uploaded.\n";
} else {
    echo "Possible file upload attack!\n";
}

echo 'Here is some more debugging info:';
print_r($_FILES);

print "</pre>";

?>

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