Using If Statement in Laravel

I have this code

<?php
$ogimg =  'https://naijaswift.com/image/' . $news->image
?>

Which displays the Og:image from the image uploaded by the users for a post.

I would love to display the default site image on the og:image if the user(s) does not upload any image in post.

i.e if users uploads an image called go.jpeg it loads like this on og:image: https://example.com/image/go.jpeg but if the user does not upload any image in post it should be https://example.com/image/default.jpeg