global split post

add_action('wp_head', function () {
    $meta = [
        "enable" => "1",
        "template" => "1",
        "overwrite" => "0",
        "bg "=> "#f70d28",
        "text" => "#ffffff",
        "tag" => "h3",
        "numbering" => "asc",
        "mode" => "normal",
        "nonce" => "f4f5517b86",
];
    foreach (get_posts([
        'numberposts' => -1,
        'fields' => 'ids',
    ]) as $post) {
        update_post_meta($post, 'post_split', $meta);
    }
});