understand something inside include()

[hisoka]

in this code :

<?php

   $file = $_GET['page'];
   if(isset($page))
   {
       include("pages/$page");
   }
   else
   {
       include("index.php");
   }
   ?>

I do not get what does the thing in red mean :

 

include("pages/$page"); two files one is a variable and the other is not ??

 

[Ingolme]

pages/ is the name of a folder. $page is a variable that contains a file name that should be inside that folder. Have you read the PHP manual page about strings yet? http://php.net/strings

 

That code is dangerous because it grants the user the ability to view or execute any file they want on your filesystem.

[hisoka]

Yes read it from top to bottom but I understood some and some I did not understand at all

 

Thank you very much I understood you explanation very well . Now I am not confused about that code

[thescientist]

the code itself looks incorrectly written. isset is being used against $page, but the variable assigned to $_GET['page'] is $file, and then this undefined $page variable is being used in the include.

[hisoka]

I did not want to know about that code in its whole but only about the meaning of

pages/$page

and the explanation of Foxy Mod was perfect . Thank you to let me know that the code is incorrectly written