获取文件夹路径:

dirname($path)获取文件名:

basename($path)获取文件后缀:

pathinfo($path,PATHINFO_EXTENSION)示例:
a. 代码:

<?php$path = "a/b/lee.jpg";$dir = dirname($path);$file = basename($path);$ext = pathinfo($path,PATHINFO_EXTENSION);echo $dir;echo "\n";echo $file;echo "\n";echo $ext;

b. 输出:

a/blee.jpgjpg