PHP:从路径中删除文件名

Question

说我有一条路径:images/alphabet/abc/23345.jpg

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

Answer 1

你要 dirname()

Answer 2

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

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

Answer 3

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

为此,您应该使用pathinfo():

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

该PATHINFO_DIRNAME通知pathinfo直接返回dirname.

看一些例子:

• 对于路径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/'
  

• 对于路径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/'