create a custom shortcode to display all post categories in WordPress

You can create a custom shortcode to display all post categories in WordPress. Add the following code to your theme's functions.php file or in a custom plugin: Code for Shortcode:

function sajjadrogi_all_categories_shortcode($atts) {
    $categories = get_categories();
    if (empty($categories)) {
        return '
No categories found.
';
    }

    $output = '
';
    foreach ($categories as $category) {
        $output .= '
' . $category->name . ' (' . $category->count . ')
';
    }
    $output .= '
';

    return $output;
}
add_shortcode('all_categories', 'sajjadrogi_all_categories_shortcode');

How to Use the Shortcode: Simply place the following shortcode in any post, page, or widget: [all_categories] Customization: The list will show all categories as links, along with the number of posts in each category. You can customize the CSS by targeting .sajjadrogi-category-list in your stylesheet.