Simple function for getting media image sizes for WordPress.
use function WaughJ\WPGetImageSizes\WPGetImageSizes;
$image_sizes = WPGetImageSizes();
foreach ( $image_sizes as $size )
{
echo "{$size->getSlug()} : {$size->getWidth()} : {$size->getHeight()}\n";
}
On default WordPress installations, will print:
thumbnail : 150 : 150
medium : 300 : 300
medium_large : 768 : 768
large : 1024 : 1024