0

我发现这个脚本从特定文件夹中的特定扩展名中删除文件我想知道如何让它搜索以而不是扩展名结尾的文件让我们说“-75x60.jpg”请帮帮我。发送

文件： file_del.class.php

class fileDel
{

     var $extension;

   /** 
   *   @purpose: Sets path and extension
   *   @params : path, file extension to delete
   *   @return none
   */

   function fileDel($extension)
   {
      $this->extension = $extension;    
   }//End of function

   /** 
   *   @purpose: Recursively deleting files
   *   @params : path to execute
   *   @return : none
   */

   function delDirFiles ($path)
   {
      $dir = opendir ($path);

      while ($file = readdir ($dir)) 
      {
         if (($file == ".") or ($file == ".."))
         {
            continue;
         }                

             if (filetype ("$path/$file") == "dir")
             {              
            $this->delDirFiles("$path/$file");
         }                
         //whether file of desired extension is found
                 elseif($this->findExtension($file)==$this->extension)
                 {                    
            if(@unlink ("$path/$file"))
            {
               echo "$path/$file >> <b>Deleted</b><br>";
            }   
         }                   

      } //End of while
      closedir($dir);

   }//End of function

   /** 
   *   @purpose: Finding extension of a file
   *   @params : filename
   *   @return : extension
   */
   function findExtension($file)
   {

      return array_pop(explode(".",$file));

   }//End of function

} //End of class

文件： test.php

require_once "file_del.class.php";

$path = "/your/desired/path/to/delete_from";
$ext  = "desired_ext";

$delObj = new fileDel($ext);

$delObj->delDirFiles($path);
4

3 回答 3

1

另一个使用标准 PHP 递归目录迭代器的变体，结合了一个简单的FilterIterator：

<?php

foreach (new FileEndingLister('/path/to/dir', '-75x60.jpg') as $file)
{
    unlink($file);
}

这FileEndingLister是一些代码行，实例化递归目录迭代器并提供基于每个文件名末尾的过滤器：

class FileEndingLister extends FilterIterator
{
    private $ending;
    public function __construct($path, $ending) {
        $this->ending = $ending;
        parent::__construct(new RecursiveIteratorIterator(new RecursiveDirectoryIterator($path)));
    }
    public function accept() {
        return $this->isFile() 
          && substr(parent::current()->getFilename(), -strlen($this->ending)) === $this->ending;
    }
}
于 2012-04-10T15:36:54.177 回答
1

我不认为你真的需要一个类来做到这一点。使用 RecursiveIteratorIterator 和 RecursiveDirectoryIterator，这是一个微不足道的挑战：

<?php
$endswith = '-75x60.jpg';

$directory = './tmp';

$it = new RecursiveIteratorIterator( new RecursiveDirectoryIterator( $directory ) );

$endslength = strlen( $endswith );
foreach( $it as $file ) {
    if( substr( $file, -( $endslength ) ) === $endswith ) {
        echo "Removing $file.\n";
        unlink( $file );
    }
}

无论如何，检测字符串（例如文件名）是否以某些内容结尾，您可以将负偏移量传递给substr，因此它将返回与您正在测试的字符串相同数量的字符。然后，您可以检查两者是否相等。

于 2012-04-10T14:48:59.357 回答
0

尝试这个：

<?php
class fileDel {
    var $fileEndsWith;

    function fileDel($fileEndsWith) {
        $this->fileEndsWith = $fileEndsWith;
    }

    function delDirFiles ($path) {
        $dir = opendir ($path);

        while ($file = readdir ($dir)) {
            if (($file == ".") or ($file == "..")) {
                continue;
            }

            if (filetype("$path/$file") == "dir") {
                $this->delDirFiles("$path/$file");
            }
            elseif($this->findFileEndsWith($file)==$this->fileEndsWith) {                    
                if(@unlink ("$path/$file")) {
                    echo "$path/$file >> <b>Deleted</b><br>";
                }
            }
        }
        closedir($dir);
    }

    function findFileEndsWith($file) {
        $length = strlen( $this->fileEndsWith );
        return substr( $file, -$length, $length );
    }
}

require_once "file_del.class.php";

$path = "/your/desired/path/to/delete_from";
$ext  = "desired_file_end_str";

$delObj = new fileDel($ext);

$delObj->delDirFiles($path);
?>

希望能帮助到你。

于 2012-04-10T14:53:09.933 回答