get-image-sizes-by-id.php

<?php

/**
 * Get image sizes by ID
 * 
 * @param int $media_id The media ID
 * 
 * @return array|bool
 */
function get_image_sizes_by_id( $media_id ) {
    // Check if the media ID is valid.
    if ( wp_attachment_is_image( $media_id ) ) {
        // Get the image size information for the full size.
        $image_size_info = wp_get_attachment_image_src( $media_id, 'full' );

        if ( $image_size_info ) {
            // Extract the width and height from the returned array
            list( $url, $width, $height ) = $image_size_info;

            // Return the dimensions as an array
            return array(
                'width'  => $width,
                'height' => $height
            );
        }
    }

    // If the media ID is not valid or doesn't exist, return false.
    return false;
}