[PHP] Skrypt do tworzenia tabelki nie działa Opcje

[Eleeist]

[PHP] pobierz, plaintext 
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
Enter number of rows <input name="rows" type="text" size="4" /><br />
Enter number of columns <input name="columns" type="text" size="4" /><br />
<input type="submit" name="submit" value="Draw Table">
</form>
 
<?php 
 
if (!isset($_POST['submit'])) {
 
	echo "<table width = 90% border = '1' cellspacing = '5' cellpadding = '0'>";
 
	// Variables from form input
 
	$rows = $_POST['rows'];
	$columns = $_POST['columns'];
 
	// Loop for rows
 
	for ($r = 1; $r <= $rows; $r++) {
		echo "<tr>";
 
    // Loop for columns
 
        for ($c = 1; $c <= $columns; $c++) {
            echo "<td>&nbsp;</td>";
        }     echo "</tr> ";
    }
    echo "</table>";
}
 
?>
[PHP] pobierz, plaintext 

Nie mogę dojść dlaczego ten skrypt nie działa... Pomoże ktoś? (IMG:style_emoticons/default/smile.gif)