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.ab.file, how to make it access only the ab directory_PHP tutorial

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Release： 2016-07-13 10:51:43
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'./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


www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/632539.htmlTechArticle'./a/b/'.$file, how can I make him access only the a/b directory' ./a/b/'.$file If $file = '../1.php', you can access /a/1.php. $file is entered by the user and only allows access to './a/b/'. The following text...
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file Do Can how Table of contents access
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