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Settings pages provide user-friendly configuration options. Use add_menu_page or add_submenu_page to create admin menu items. The Settings API handles form rendering, validation, and storage. Register settings with register_setting and define sections with add_settings_section. Create fields using add_settings_field for individual options. Use settings_fields and do_settings_sections to render forms. Implement custom validation callbacks for complex requirements. Store […]

WordPress provides the wpdb class for database interactions. Use wpdb prepare for all queries with variables to prevent SQL injection. Methods like get_results, get_row, and get_var retrieve data efficiently. The insert, update, and delete methods simplify common operations. Create custom tables only when necessary, prefixing with wpdb prefix. Handle database errors gracefully using wpdb last_error. […]

AJAX enhances user experience by enabling dynamic updates without page reloads. WordPress provides built-in AJAX handling through admin-ajax.php. Register AJAX actions using wp_ajax and wp_ajax_nopriv hooks. Use wp_localize_script to pass the AJAX URL and nonce to JavaScript. Always verify nonces in PHP handlers for security. Return data using wp_send_json_success or wp_send_json_error. Handle both authenticated and […]

Internationalization makes your plugin accessible to global users. Wrap all user-facing strings with translation functions like esc_html__ and _e. Set a unique text domain matching your plugin slug. Load translations using load_plugin_textdomain in the init hook. Use wp i18n make-pot to generate POT files from your code. Translators use these files to create language-specific translations. […]

Security is paramount in plugin development. Always sanitize input using functions like sanitize_text_field and sanitize_email. Validate data before processing to prevent malicious submissions. Escape output with esc_html, esc_url, and esc_attr. Use nonces to verify request authenticity and prevent CSRF attacks. Check user capabilities with current_user_can before sensitive operations. Prepare database queries properly using wpdb prepare […]

The REST API enables powerful integrations and modern JavaScript applications. Register custom endpoints using register_rest_route in the rest_api_init hook. Define route patterns, methods, and permission callbacks. Use WP_REST_Request to access parameters and WP_REST_Response for returns. Implement proper authentication and capability checks. Custom post types automatically get REST endpoints with show_in_rest. Add custom fields to responses […]

Custom post types extend WordPress beyond standard posts and pages. Use register_post_type to define new content types with unique features. Configure labels, supports, and capabilities to control behavior. Set public, has_archive, and rewrite parameters for proper URL structure. Remember to flush rewrite rules on plugin activation. Custom taxonomies complement post types for better organization. Use […]

Proper asset enqueuing prevents conflicts and maintains compatibility. Use wp_enqueue_script and wp_enqueue_style instead of hardcoding tags. Register dependencies to ensure correct loading order. The wp_enqueue_scripts action is the proper hook for frontend assets. Use admin_enqueue_scripts for admin-only resources. Specify version numbers for cache busting during updates. Load scripts in footer when possible for better performance. […]

WordPress hooks are the foundation of plugin development. Actions and filters allow you to modify WordPress behavior without editing core files. Actions let you execute custom code at specific points, while filters modify data before it’s displayed or saved. Understanding the difference between add_action and add_filter is crucial. Common hooks include init, wp_enqueue_scripts, and save_post. […]