Custom Post Type WordPress with PHP code

Here’s a simple example of how to create a custom post type in WordPress using PHP code:

function create_custom_post_type() {
    $labels = array(
        'name' => 'Books',
        'singular_name' => 'Book',
        'add_new' => 'Add New',
        'add_new_item' => 'Add New Book',
        'edit_item' => 'Edit Book',
        'new_item' => 'New Book',
        'all_items' => 'All Books',
        'view_item' => 'View Book',
        'search_items' => 'Search Books',
        'not_found' =>  'No books found',
        'not_found_in_trash' => 'No books found in Trash', 
        'parent_item_colon' => '',
        'menu_name' => 'Books'
    );
    
    $args = array(
        'labels' => $labels,
        'public' => true,
        'publicly_queryable' => true,
        'show_ui' => true, 
        'show_in_menu' => true, 
        'query_var' => true,
        'rewrite' => array( 'slug' => 'book' ),
        'capability_type' => 'post',
        'has_archive' => true, 
        'hierarchical' => false,
        'menu_position' => null,
        'supports' => array( 'title', 'editor', 'author', 'thumbnail', 'excerpt', 'comments' )
    ); 
    
    register_post_type( 'book', $args );
}
add_action( 'init', 'create_custom_post_type' );

In this example, the create_custom_post_type function creates a custom post type named “Book”. The $labels array defines the labels for the custom post type, such as the name, singular name, and various labels for the admin area. The $args array defines the various arguments for the custom post type, such as the public visibility, capability type, and support for various features like title, editor, author, etc.

The register_post_type function registers the custom post type with WordPress, passing in the name of the custom post type and the arguments array. The add_action function hooks the custom post type creation into the init action, so it runs when WordPress initializes.