Create Custom Post Type in WordPress

functions.php

add_action('init', 'tessak22_register_custom_post_types', 0);
function tessak22_register_custom_post_types()
{
    $arr_custom_post_type_options = array(
        /*
         array(
            'label' => 'lowercase_name' // ** 20 char max, no spaces or caps
            'singlar' => 'Human-Readable Item' // singular name
            'plural' => 'Human-Readable Items' // plural name
            'supports' => array('title', 'editor', 'author', 'thumbnail', 'excerpt', 'trackbacks', 'custom-fields', 'comments', 'revisions', 'page-attributes', 'post-formats')
         ),
         'icon' => 'dashicons-groups',
         */
        array(
            'label' => 'talks',
            'singular' => 'Talk',
            'plural' => 'Talks',
            'supports' => array('title', 'editor', 'custom-fields', 'page-attributes','excerpt','thumbnail'),
            'icon' => 'dashicons-megaphone',
        ),
        array(
            'label' => 'events',
            'singular' => 'Event',
            'plural' => 'Events',
            'supports' => array('title', 'editor', 'custom-fields', 'page-attributes','excerpt','thumbnail'),
            'icon' => 'dashicons-calendar',
        ),
    );
    foreach ($arr_custom_post_type_options as $cpt_opts) {
        $label = $cpt_opts['label'];
        $labels = array(
            'name'                => $cpt_opts['plural'],
            'singular_name'       => $cpt_opts['singular'],
            'menu_name'           => $cpt_opts['plural'],
            'parent_item_colon'   => 'Parent:',
            'all_items'           => $cpt_opts['plural'],
            'view_item'           => 'View',
            'add_new_item'        => 'Add New',
            'add_new'             => 'Add New',
            'edit_item'           => 'Edit',
            'update_item'         => 'Update',
            'search_items'        => 'Search ' . $cpt_opts['plural'],
            'not_found'           => 'None found',
            'not_found_in_trash'  => 'None found in Trash',
        );
        $args = array(
            'label'               => $label,
            'description'         => $cpt_opts['plural'],
            'labels'              => $labels,
            'supports'            => $cpt_opts['supports'],
            'hierarchical'        => true,
            'public'              => false,
            'show_ui'             => true,
            'show_in_menu'        => true,
            'show_in_nav_menus'   => false,
            'show_in_admin_bar'   => true,
            'menu_position'       => 25.3,
            'menu_icon'           => $cpt_opts['icon'],
            'can_export'          => true,
            'has_archive'         => true,
            'exclude_from_search' => false,
            'publicly_queryable'  => true,
            'rewrite'             => true,
            'capability_type'     => 'post',
        );
        register_post_type($label, $args);
    }
}