WordPress: Check if an image URL is a crop

wp-is-image-url-crop.php

<?php

function is_image_url_crop( string $image_url ) : bool {
	// Check if this is an intermediate size image.
	preg_match( '/-(\d+)x(\d+)\./', $image_url, $matches );

	if ( ! empty( $matches[0] ) ) {
		return true;
	}

	return false;
}