WP Post type creation from function.php

New post type and taxonomy creation in WP

For creating a new post types in wordpress admin panel we can use below function in init hook.

function theme_posttype() {
    register_post_type('portfolio', array('label' => 'Works',
        'description' => '',
        'public' => true,
        'show_ui' => true,
        'show_in_menu' => true,
        'capability_type' => 'page',
        'hierarchical' => false,
        'query_var' => true,
        'has_archive' => true,
        'exclude_from_search' => false,
        'supports' => array('title', 'editor', 'thumbnail'),
        'taxonomies' => array('post_tag'),
        //'menu_icon' => 'dashicons-video-alt3',
        'labels' => array(
            'name' => 'Portfolio',
            'singular_name' => 'Portfolio',
            'menu_name' => 'Portfolio',
            'add_new' => 'Add New Portfolio',
            'add_new_item' => 'Add New Portfolio',
            'edit' => 'Edit Portfolio',
            'edit_item' => 'Edit Portfolio',
            'new_item' => 'New Portfolio',
            'view' => 'View Portfolio',
            'view_item' => 'View Portfolio',
            'search_items' => 'Search Portfolio',
            'not_found' => 'No Portfolio Found',
            'not_found_in_trash' => 'No Portfolio Found in Trash',
            'parent' => 'Parent Portfolio',
    )));
    register_taxonomy(
        'work-category', 'portfolio', array(
            'label' => __('Portfolio Categories'),
            'hierarchical' => true,
            'show_admin_column' => true
        )
    );
}
add_action('init', 'theme_posttype');