PHP

Secure "included php files"

index.php
<?php
     if((!defined('z'))){ define('z','0');  }
     include('file.php')
?>

file.php
<?php
     if((!defined("z"))){exit;}
?>

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Secure php dynamic code build.

$_GET[] | Query Navigation

Example 1

<?php
   $PAGES          = array();
   $PAGES = [
      'home'       => 'home.html'
     ,'about'      => 'about.php'
     ,'contact'    => 'somedir/contact.php'
   ];
   @include(substr($PAGES[$_GET['p']] ?? ('home'), 0, 255));
   exit;
?>

Example 2

<?php
   $PAGES          = array();  
   $PAGES = [
      'home'       => 'home.html'
     ,'about'      => 'about.php'
     ,'contact'    => 'somedir/contact.php'
   ];
   @include($PAGES[$_GET['p']] ?? ('home'));
   exit;
?>