Unexpected "<" error in php

Hello,

I just started learning php and I was doing form handling. I got this this error on xampp server when I tried to run my code.
The error was :

Parse error: syntax error, unexpected '<', expecting end of file in C:\xampp\htdocs\catalog.php on line 2

Here is my code :

<?php
<input type="text" name="product_id">
<select name="category">
<option value="ovenmitt">Pot Holder</option>
<option value="fryingpan">Frying Pan</option>
<option value="torch">Kitchen Torch</option>
</select>
<input type="submit" name="submit">
</form>Here are the submitted valuesproduct_id: <?php print $_POST['product_id'] ?? ''?>
<br/>
category: <?php print $_POST['category'] ?? ''?>

?>
Can anyone please help how could this error be handled. Thanks in advance :)