<?php
if(!empty($_POST['time'])){
        $time = $_POST['time'];
        if ($time == 0){
                echo "000";
        }
        else if ($time == 1){
                echo "1111";
        }
        else if ($time == 2){
                echo "2222";
        }else
                echo "CHYBA";
}else{
        ?>

                <form method="post" action="picovina.php">
                <fieldset>

                <label for="time">Čas:</label>
                <select name="time">
                <option value="1">Jeden</option>
                <option value="2">2</option>
                </select><br />


                <input type="submit" name="send" id="send" value="send" />
                </fieldset>
                </form>

                <?php
}
?>