------------- index.php -----------

<? 
	echo "Klik <a href=\"toevoegen.php\">hier</a> om een bericht toe te voegen.<p>";

   $file = fopen("counter.txt", "r"); 
   $counter = fgets($file, 4096); 
   fclose($file);

   for ($i = $counter; $i > 0; $i--) 
   { 
	   	if ($i < 10) 
		   $i = "000" . $i; 
		elseif ($i < 100) 
		   $i = "00" . $i; 
		elseif ($i < 1000) 
		   $i = "0" . $i; 
	   
       $get_file = $i . "_bericht.txt"; 
       if (file_exists($get_file)) 
       {
           include($get_file);
           echo "<br>";
       }
   } 
?>

------- toevoegen.php -------

<?

if ($_POST['submit'] && $_POST['naam'] && $_POST['bericht'])
{
	$post_naam = htmlentities($_POST['naam']);
	$post_bericht = htmlentities($_POST['bericht']);
	$post_bericht = nl2br($post_bericht);
	
	$gastenboek_tekst = "<b>Geschreven door</b> " . $post_naam . " <b>op</b> " . date('d.m.Y H:i') . "<br>\n<b>Bericht:</b><br>" . $post_bericht . "<p>\n\n<hr align=\"left\" width=\"200\">\n\n";
	
	$file = fopen("counter.txt", "r"); 
	$num = fgets($file, 4096); 
	fclose($file); 
	
	$ornum = $num + 1; 
	$num = $num + 1;
	
	if ($num < 10) 
	   $num = "000" . $num; 
	elseif ($num < 100) 
	   $num = "00" . $num; 
	elseif ($num < 1000) 
	   $num = "0" . $num; 
	
	$filetoopen = $num . "_bericht.txt"; 
	
	$file = fopen($filetoopen, "a");
	fwrite($file, $gastenboek_tekst); 
	fclose($file);
	
	$cfile = fopen("counter.txt", "w");
	fwrite($cfile, $ornum);
	fclose($cfile);
	
	echo "Bericht toegevoegd.<p>";
	
	echo "Klik <a href=\"index.php\">hier</a> voor de berichten.";
}
else
{
	echo "Bedacht? Klik <a href=\"index.php\">hier</a> voor de berichten.<p>";
	
	echo "<form method=\"POST\" action=\"" . $_SERVER['PHP_SELF'] . "\">";
	echo "Naam:<br><input type=\"text\" name=\"naam\" value=\"" . htmlentities($_POST['naam']) . "\"><br>";
	echo "Bericht:<br><textarea name=\"bericht\" rows=\"5\" cols=\"45\">" . htmlentities($_POST['bericht']) . "</textarea><br>";
	echo "<input type=\"submit\" name=\"submit\" value=\"Bericht toevoegen\">";
	echo "</form>";
}
?>

----------- counter.txt -------------
0