php 如何从php中的文件夹中删除文件

how to delete a file from folder in php

提问by xing

I have a folder 'items'in which there are 3 files item1.txt, item2.txt and item3.txt.I want to delete item2.txtfile from folder. I am using the below code but it not deleting a file from folder. Can any body help me in that.

我有一个文件夹'items'，其中有 3 个文件item1.txt, item2.txt and item3.txt.我想delete item2.txt从文件夹中归档。我正在使用下面的代码，但它没有从文件夹中删除文件。任何机构都可以帮助我。

<?php
        $data="item2.txt";
        $dir = "items";
        $dirHandle = opendir($dir);
        while ($file = readdir($dirHandle)) {
            if($file==$data) {
                unlink($file);
            }
        }

        closedir($dirHandle);

?>    

回答by Vamsi

• Initially folder should have 777 permissions

      $data="item2.txt";
      $dir = "items";
      while ($file = readdir($dirHandle)) {
                                           if($file==$data) {
                                                      unlink($dir.'/'.$file);
                                           }
      }
  

• 最初文件夹应该有 777 权限

      $data="item2.txt";
      $dir = "items";
      while ($file = readdir($dirHandle)) {
                                           if($file==$data) {
                                                      unlink($dir.'/'.$file);
                                           }
      }
  

or try

或尝试

$path = $_SERVER['DOCUMENT_ROOT'].'items/item2.txt';
unlink($path);

回答by Tahir Yasin

No need of while loop here for just deleting a file, you have to pass path of that file to unlink() function, as shown below.

这里不需要while循环来删除一个文件，你必须将该文件的路径传递给unlink()函数，如下所示。

$file_to_delete = 'items/item2.txt';
unlink($file_to_delete);

Please read details of unlink() function

请阅读 unlink() 函数的详细信息

http://php.net/manual/en/function.unlink.php

http://php.net/manual/en/function.unlink.php

回答by Sibu

There is one bug in your code, you haven't given the correct path

你的代码有一个错误，你没有给出正确的路径

<?php
        $data="item2.txt";    
        $dir = "items";    
        $dirHandle = opendir($dir);    
        while ($file = readdir($dirHandle)) {    
            if($file==$data) {
                unlink($dir."/".$file);//give correct path,
            }
        }    
        closedir($dirHandle);

?>    

• unlink

• 取消链接

回答by som

if($file==$data) {
  unlink( $dir .'/'. $file);
}

回答by prabhu programmer

It's very simple:

这很简单：

$file='a.txt';

    if(unlink($file))
    {
        echo "file named $file has been deleted successfully";
    }
    else
    {
        echo "file is not deleted";
    }

//if file is in other folder then do as follows

unlink("foldername/".$file);

回答by Louis Loudog Trottier

try renaming it to the trash or a temp folder that the server have access **UNLESS IT'S sensitive data.

尝试将其重命名为服务器有权访问的垃圾箱或临时文件夹**除非它是敏感数据。

rename($old, $new) or die("Unable to rename $old to $new.");