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How do I programmatically create a custom post type with WordPress?

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How do I programmatically create a custom post type with WordPress?

Asked on Jan 13, 2026

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Creating a custom post type in WordPress programmatically involves using the `register_post_type` function within your theme's `functions.php` file or a custom plugin. This allows you to define new content types beyond the default posts and pages.

<!-- BEGIN COPY / PASTE -->
    function my_custom_post_type() {
        $args = array(
            'labels' => array(
                'name' => 'Books',
                'singular_name' => 'Book'
            ),
            'public' => true,
            'has_archive' => true,
            'rewrite' => array('slug' => 'books'),
            'supports' => array('title', 'editor', 'thumbnail'),
        );
        register_post_type('book', $args);
    }
    add_action('init', 'my_custom_post_type');
    <!-- END COPY / PASTE -->

Additional Comment:

Place the code in your theme's `functions.php` file or a custom plugin to ensure it runs on WordPress initialization.
Customize the `$args` array to fit the needs of your custom post type, such as adding support for custom fields or taxonomies.
Always test new code in a staging environment before deploying to a live site.

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How do I programmatically create a custom post type with WordPress?

Asked on Jan 13, 2026

Answer

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