<center><form method="post" action="notki.php">
<textarea cols="30" rows="6" name="notka"></textarea><br />
<input type="submit" value="Dodaj">
</form>



<?php

$notka = $_POST['notka'];

$file = "notki.txt";
$nowedane = "<br />$notka<br />-----------------------------------";
$nowedane .= $staredane;


$fp = fopen($file, "a+");


flock($fp, 2);


fwrite($fp, $nowedane);


flock($fp, 3);


fclose($fp);

include "notki.txt";
?></center>

<center><form method="post" action="notki.php">
<textarea cols="30" rows="6" name="notka"></textarea><br />
<input type="submit" value="Dodaj">
</form>



<?php

$notka = $_POST['notka'];

  $file = "notki.txt";

  

  if($notka === ""){
  $nowedane = "";
  }
  else { $nowedane = "<br />$notka<br />-----------------------------------"; }
  
  $nowedane .= $staredane;

$fp = fopen($file, "a+");


flock($fp, 2);


fwrite($fp, $nowedane);


flock($fp, 3);


fclose($fp);

include "notki.txt";
?></center>