Meta Slider - Filmstrip Alt Tags

gistfile1.txt

function metaslider_filmstrip_alt_tags( $list_item, $post, $url ) {
    $alt = get_post_meta( $post->ID, '_wp_attachment_image_alt', true );
    
    $list_item = "<li class=\"ms-thumb slide-{$post->ID} slide-{$post->ID}\" style=\"display: none;\"><img src=\"{$url}\" alt=\"{$alt}\" /></li>";
    
    return $list_item;
}
add_filter( 'metaslider_filmstrip_list_item', 'metaslider_filmstrip_alt_tags', 10, 3 );