Untitled

<?php
 session_start();
 error_reporting();
 ?>

 <!DOCTYPE html>
 <html>
 <head>
 	<title></title>
 </head>
 <body>
 <form action="index.php" name="submit_card" method="post">
 	<input type="number" name="cardnumber" placeholder="card number"><br><br>
 	<input type="number" name="exp" placeholder="expiration date "> <br>
 	<br><input type="number" name="cvv" placeholder="cvv"> <br>
 	<br>

 	<input type="submit" name="submit_card">

 </form>
 </body>
 </html>