Home > Article > Backend Development > .ab.file, how to make it access only the ab directory_PHP tutorial
.ab.file, how to make it access only the ab directory_PHP tutorial
- WBOYOriginal
- 2016-07-13 10:51:43777browse
'./a/b/'.$file, how to make it only access the a/b directory
'./a/b/'.$file
If $file = '../1.php'
You can access /a/1.php
$file is entered by the user and is only allowed to access files under './a/b/'. What to do
Let me answer
D8888D reply content------------------------------------------------- ----------
Take the first two characters and see if they are ".."
If so, block
Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：PHP and sql server link_PHP tutorialNext article：PHP and sql server link_PHP tutorial