Check for image with same filename but different extension

Question

I'm using the following code to show images in an ACF Gallery field

<?php $images = get_field('gallery'); if( $images ): ?>

<?php foreach( $images as $image ): ?>

   <figure class="wp-caption aligncenter">

          <img class="b-lazy" src="<?php echo get_template_directory_uri(); ?>/assets/images/spinner.gif" data-src="<?php echo $image['sizes']['featured-720']; ?>" alt="<?php the_title();?>">

   </figure>

<?php endforeach; ?>
<?php endif; ?>

What i would like to do is to check for each $image, if there is another attached image with the same filename but different file extension (png).

For example:

There is an image attached called "ThisTitle.jpg" and I want to check if there is also another image attached called "ThisTitle.png"

I hope this make sense :)

Answer 1

You can use pathinfo() and getimagesize():

$info = pathinfo($image);

if ( @getimagesize($info['dirname'] . '/' . $info['filename'] . '.' . $extension_to_check) )
{
    // do something
}