If you’re using WordPress thumbnail images in your theme it’s a good idea to set a default, or “backup” option since you don’t have or don’t want to use a thumbnail on a specific post. So basically you’re saying “if the post has a thumbnail use the thumbnail” OR “if no thumbnail exists use this image”.
Here is the code to pop into your theme in the place where you want your thumbnail image to be placed.
<?php
// If post thumbnail exists, if not use this image
if ((function_exists('has_post_thumbnail')) && (has_post_thumbnail())) {
the_post_thumbnail();
}
else {
echo '<img src="http://examplesite.com/images/blah.jpg" />';
}
?>
