echo "Įveskite vardą: <input type='text' name='vardas' maxlenght='14' /><br><br>";

echo "<form action='index.php' method='post'><input type='submit' name='submit10' value='Keisti'/</form>";

if(strlen($_POST['vardas']) < 13) {

printf("<script>alert('Nepavyks!');</script>");}

if(isset($_POST['submit10'])){

atlieka tavoif veiksmą

}

<input type='submit' name='submit10' value='Keisti'/</form>

if (isset($_POST['submit10']) && strlen($_POST['vardas']) < 13) {

	echo "<script>alert('Nepavyks!');</script>\n";

}

echo "<input type='text' name='vardas' maxlenght='14' /><form action='index.php' method='post'><input type='submit' name='submit10' value='Keisti' /></form>";									if(isset($_POST['submit10'])){

printf("<script>alert('Laisvas!');</script>");}