Untitled

<html>
<head></head>
<footer>
<form method="post">
         <input type="radio" id="html" name="fav_language" value="private_number" checked="checked">
         <label for="html">private_number</label><br>
          <input type="radio" id="css" name="fav_language" value="clieant_number">
          <label for="css">clieant_number</label><br>
        <input type="text" id="fname" name="fname" maxlength="11" autocomplete="off" oninput="this.value = this.value.replace(/[^0-9.]/g, '').replace(/(\..*?)\..*/g, '$1');" required >
          <button type="submit" name="BUY"><i class="arrow right"></i></button>
    </form>
</footer>
<?php
  $numurs = $_POST['fname'];
  $Partners = $_POST['fav_language'];
if ($numurs){
   $f = fopen('numurs.csv', 'w');
   fputcsv($f,  Array($numurs, $Partners));
   fclose($f);
}
?>
</body>
</html>