<div class="entete" >
<?php 
  include('entete.php');  
?>
</div>
<div class="droite" >
<?php 
  $pageOK = array('news' => 'news.php', 
                  'presentation' => 'presentation.php');

  
  if ( (isset($_GET['page'])) && (isset($pageOK[$_GET['page']])) ) {
    include($pageOK[$_GET['page']]);
  }
?>
</div>
<div class="droite">
<?php
include('droite.php');
?>
</div> <div class="bas">
<?php 
  include('bas.php');
?>
</div> 

<?php
  $pageOK = array('news' => 'news.php',
                  'presentation' => 'presentation.php');

  
  if ( (isset($_GET['page'])) && (isset($pageOK[$_GET['page']])) ) {
    include($pageOK[$_GET['page']]);
  } else {
     include($pageOK['news']);
}
?>

Warning: main(menu.htm): failed to open stream: No such file or directory in c:\program files\easyphp1-8\www\news.php on line 11

Warning: main(): Failed opening 'menu.htm' for inclusion (include_path='.;C:/Program Files/EasyPHP1-8\php\pear\') in c:\program files\easyphp1-8\www\news.php on line 11