<form method="post" action="add.php">
Jenis Member
<select name="jenis">
<option value="A">Platinum</option>
<option value="B">Gold</option>
<option value="C">Silver</option>
</select>
<input type="submit" name="submit" value="Submit" />
</form>
Jenis Member
<select name="jenis">
<option value="A">Platinum</option>
<option value="B">Gold</option>
<option value="C">Silver</option>
</select>
<input type="submit" name="submit" value="Submit" />
</form>
<?php if(isset($_POST['jenis']) && $_POST'jenis']){?>
<form name="form-lain">
<!-- element form--->
</form>
<?php }?>