Untitled

<?php
function bb_auto_li($ciag) {
  if (preg_match('#^\*(.+?)$#m', $ciag)) {
    $ciag .= "<ul>";
    $ciag .= preg_replace("#^\*(.+?)$#m", "<li>$1</li>", $ciag);
    $ciag .= "</ul>";
    return $ciag;
  }
}

if (isset($_POST['text'])) {
$a = $_POST['text'];
$a = nl2br($a);
echo bb_auto_li($a);
}
?>

<form action="" method="post">
<textarea name="text"></textarea>
<input type="submit" value="send" />
</form>