public function printQuestion()
 {
     printf_array($this->template, $this->data);
     echo '<br>';
     foreach ($this->choices as $choice) {
         echo "<input type=radio id={$choice} name=ans value={$choice}><label for={$choice}>{$choice} &#181;g</label><br>";
     }
 }
 public function printQuestion()
 {
     $data = array($this->startunit, $this->concentration);
     printf_array($this->template, $data);
     echo "<form method=POST>";
     foreach ($this->choices as $choice) {
         echo "<input type=radio name=ans value={$choice}>{$choice}<br>";
     }
     echo "<input type=submit name=next value=Seuraava>";
     echo "</form>";
 }
 public function printQuestion()
 {
     printf_array($this->template, $this->data);
     echo "<form method=POST>";
     foreach ($this->choices as $choice) {
         echo "<input type=radio id={$choice} name=ans value={$choice}><label for={$choice}>{$choice} mg</label><br>";
     }
     echo '<input type=submit name=next value=Seuraava class="btn btn-primary">';
     echo "</form>";
 }