为什么Scandir（）函数不起作用？

Question

I am getting the following php warning when using the scandir() function :

Scandir failed to open dir: opration not permitted in public_html/page2.php on line 3

page2.php

 <?Php
 $folder="/";
 $result=scandir($folder);
 print_r($result); 

I want to use this function to print the files and sub directories of my root folder but it's not working.

Does someone know how to fix it?

Answer 1

Because you're trying to scan a directory that you don't have permissions to do (in this case the root directory / ).

Either change the permissions, or scan a directory you do have permissions for.

This may either be on a directory permissions basis, or using the open_basedir directive.