PHP：从路径中删除文件名

PHP: remove filename from path

提问by George Reith

Say I have an path: images/alphabet/abc/23345.jpg

假设我有一条路径：images/alphabet/abc/23345.jpg

How do I remove the file at the end from the path? So I end up with: images/aphabet/abc/

如何从路径中删除末尾的文件？所以我最终得到：images/aphabet/abc/

回答by Byron Whitlock

You want dirname()

你要 dirname()

回答by abney317

<?php
    $path = pathinfo('images/alphabet/abc/23345.jpg');
    echo $path['dirname'];
?>

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

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

回答by Machado

dirname()only gives you the parent folder's name, so dirname()will failwhere pathinfo()will not.

dirname()只给你父文件夹的名称，因此dirname()将无法在那里pathinfo()不会。

For that, you should use pathinfo():

为此，您应该使用pathinfo()：

$dirname = pathinfo('images/alphabet/abc/23345.jpg', PATHINFO_DIRNAME);

The PATHINFO_DIRNAMEtells pathinfoto directly return the dirname.

该PATHINFO_DIRNAME通知pathinfo直接返回dirname。

See some examples:

看一些例子：

• For path images/alphabet/abc/23345.jpg, both works:

  <?php
  
  $dirname = dirname('images/alphabet/abc/23345.jpg'); 
  // $dirname === 'images/alphabet/abc/'
  
  $dirname = pathinfo('images/alphabet/abc/23345.jpg', PATHINFO_DIRNAME); 
  // $dirname === 'images/alphabet/abc/'
  

• For path images/alphabet/abc/, where dirnamefails:

  <?php
  
  $dirname = dirname('images/alphabet/abc/'); 
  // $dirname === 'images/alphabet/'
  
  $dirname = pathinfo('images/alphabet/abc/', PATHINFO_DIRNAME); 
  // $dirname === 'images/alphabet/abc/'
  

• 对于 path images/alphabet/abc/23345.jpg，两者都有效：

  <?php
  
  $dirname = dirname('images/alphabet/abc/23345.jpg'); 
  // $dirname === 'images/alphabet/abc/'
  
  $dirname = pathinfo('images/alphabet/abc/23345.jpg', PATHINFO_DIRNAME); 
  // $dirname === 'images/alphabet/abc/'
  

• 对于 path images/alphabet/abc/，dirname失败的地方：

  <?php
  
  $dirname = dirname('images/alphabet/abc/'); 
  // $dirname === 'images/alphabet/'
  
  $dirname = pathinfo('images/alphabet/abc/', PATHINFO_DIRNAME); 
  // $dirname === 'images/alphabet/abc/'