Copy-pasteable solutions for common WordPress engineering problems. Verified for WP 6.4+.
Add a "Fancy Border" style to the core Image block. This uses the modern server-side registration method, which only loads the CSS when the style is actually used on a page.
register_block_style('core/image', array( Extends the core Group block to create a pre-configured "Hero Section" available directly in the inserter.
wp.blocks.registerBlockVariation('core/group', { Enable missing design tools (like Line Height, Border, or Spacing) on Core blocks without modifying the block's source code.
add_filter('register_block_type_args', function($args, $name) { Conditionally disable the Block Editor and revert to the Classic Editor (or raw HTML) using the use_block_editor_for_post_type filter.
add_filter('use_block_editor_for_post_type', function($use_block_editor, $post_type) { Remove clutter by unregistering specific blocks or categories from the "Plus" menu. This prevents clients from inserting complex blocks like "Verse" or "Archives" that break your design system.
wp.hooks.addFilter('blocks.registerBlockType', 'my-theme/filter-blocks', function(settings, name) { A direct SQL query to identify and remove row entries in wp_postmeta that are linked to post IDs that no longer exist in wp_posts.
DELETE pm FROM wp_postmeta pm Efficiently regenerate WordPress image thumbnails via WP-CLI to avoid PHP timeouts and memory errors. Ideal for large media libraries.
wp media regenerate --yes Create a server-side render callback for dynamic blocks that fetches data on each page load.
register_block_type('my-plugin/dynamic-block', array( Conditionally render block content based on user roles, post meta, or custom conditions.
add_filter('render_block', function($block_content, $block) { Process and render inner blocks on the server side for better performance and SEO.
function render_inner_blocks($block) { Create a custom block context provider to share data between parent and child blocks.
const { registerBlockType } = wp.blocks; Handle deprecated block versions and migrate old block attributes to new format.
const deprecated = [{ Register a custom block pattern category for organizing reusable block patterns.
register_block_pattern_category('my-category', array( Register a block that is only available internally and not shown in the block inserter.
register_block_type('my-plugin/private-block', array( Remove default WordPress block patterns from the pattern inserter to simplify the editor.
remove_theme_support('core-block-patterns'); Lock specific blocks or entire templates to prevent client modifications.
add_filter('block_editor_settings_all', function($settings) { Limit which blocks are available in the inserter based on user roles.
wp.hooks.addFilter('blocks.registerBlockType', 'my-theme/restrict-blocks', function(settings, name) { Automatically insert a specific block when the editor loads for new posts.
wp.data.dispatch('core/editor').insertBlocks([ Hide the block settings sidebar panel for specific blocks or user roles.
wp.plugins.registerPlugin('hide-settings-panel', { Display a custom notice banner in the block editor to inform users about important information.
const { createElement } = wp.element; Create a custom sidebar plugin for the block editor with custom controls and settings.
const { registerPlugin } = wp.plugins; Add custom inspector controls to blocks using the Block Inspector Controls API.
const { InspectorControls } = wp.blockEditor; Create a reusable media picker component for selecting images, videos, or other media.
const { MediaUpload } = wp.blockEditor; Create a text input control with debounced onChange handler for better performance.
const { useState, useEffect } = wp.element; Add custom toolbar buttons to blocks for additional functionality.
const { BlockControls } = wp.blockEditor; Create a custom Redux store for managing block-specific state and data.
const { registerStore } = wp.data; Implement a caching layer for wp.data to improve performance and reduce API calls.
const { select, dispatch } = wp.data; Fetch data asynchronously in blocks using the WordPress REST API with loading states.
const { apiFetch } = wp; Add custom columns to the WordPress admin post list table to display custom meta or data.
add_filter('manage_posts_columns', function($columns) { Make custom admin columns sortable by clicking the column header.
add_filter('manage_edit-post_sortable_columns', function($columns) { Display custom post meta or computed values in admin list table columns.
add_action('manage_posts_custom_column', function($column, $post_id) { Enable bulk editing for custom columns in the WordPress admin.
add_action('bulk_edit_custom_box', function($column_name, $post_type) { Remove default WordPress dashboard widgets to create a cleaner admin experience.
add_action('wp_dashboard_setup', function() { Replace the default WordPress admin footer text with custom branding or information.
add_filter('admin_footer_text', function() { Add visual separators between admin menu items for better organization.
add_action('admin_menu', function() { Create persistent admin notices that remain visible until dismissed by the user.
add_action('admin_notices', function() { Add a dark mode toggle button to the WordPress admin interface.
const toggleDarkMode = () => { Add custom help tabs to admin pages to provide context-specific documentation.
add_action('admin_head', function() { Replace the default WordPress logo on the login page with your custom branding.
add_action('login_enqueue_scripts', function() { Remove the shake animation effect when login credentials are incorrect.
add_action('login_head', function() { Generate secure one-time login links that expire after use or time limit.
function generate_magic_login_link($user_id) { Prevent brute force attacks by limiting the number of failed login attempts.
add_filter('authenticate', function($user, $username, $password) { Redirect users to different pages after login based on their user role.
add_filter('login_redirect', function($redirect_to, $requested_redirect_to, $user) { Duplicate an existing user role with all its capabilities for customization.
function clone_user_role($source_role, $new_role, $display_name) { Grant temporary capabilities to users that expire after a set time period.
add_filter('user_has_cap', function($allcaps, $cap, $args) { Allow administrators to temporarily log in as another user for support purposes.
add_action('admin_bar_menu', function($wp_admin_bar) { Clean up expired and orphaned transients from the WordPress options table.
DELETE FROM wp_options WHERE option_name LIKE '_transient_%' Identify tags that are not assigned to any posts for cleanup.
SELECT t.term_id, t.name FROM wp_terms t Identify and optimize options that are unnecessarily autoloaded on every page request.
SELECT option_name, LENGTH(option_value) as size FROM wp_options Identify postmeta entries that are unusually large and may be causing performance issues.
SELECT meta_id, post_id, meta_key, LENGTH(meta_value) as size FROM wp_postmeta Optimize WordPress queries using the pre_get_posts hook to reduce database load.
add_action('pre_get_posts', function($query) { Remove SQL_CALC_FOUND_ROWS from paginated queries to improve performance.
add_filter('found_posts_query', function($sql) { Add custom query monitoring and debugging helpers for development.
add_filter('log_query_custom_data', function($data, $query) { Safely search and replace URLs or strings in the WordPress database using WP-CLI.
wp search-replace 'old-url.com' 'new-url.com' Create a new WordPress administrator user via WP-CLI command line.
wp user create admin admin@example.com --role=administrator Generate multiple posts programmatically using WP-CLI for testing or content migration.
wp post generate --count=100 --post_type=post Monitor and debug WordPress cron jobs to ensure scheduled tasks are running correctly.
wp cron event list Disable the WordPress Heartbeat API to reduce server load and improve performance.
add_action('init', function() { Implement fragment caching for expensive operations like complex queries or API calls.
function get_cached_fragment($key, $callback, $expiration = 3600) { Pre-populate the object cache with frequently accessed data to improve response times.
function warm_object_cache() { Set proper HTTP cache headers for static assets and API responses.
add_action('send_headers', function() { Enable SVG uploads in WordPress with security sanitization to prevent XSS attacks.
add_filter('upload_mimes', function($mimes) { Implement lazy loading for CSS background images to improve page load performance.
const lazyBackgroundObserver = new IntersectionObserver((entries) => { Automatically generate WebP versions of uploaded images for better performance.
add_filter('wp_handle_upload_prefilter', function($file) { Add custom filters to the WordPress media library for better organization.
wp.media.controller.Library.extend({ Automatically generate alt text for images using AI or image analysis.
add_action('add_attachment', function($post_id) { Disable XML-RPC to prevent brute force attacks and improve security.
add_filter('xmlrpc_enabled', '__return_false'); Implement rate limiting for the WordPress REST API to prevent abuse.
add_filter('rest_authentication_errors', function($result) { Remove WordPress version information from the frontend to improve security.
remove_action('wp_head', 'wp_generator'); Create a reusable wrapper function for nonce validation in forms and AJAX requests.
function validate_nonce($action, $nonce) { Log all admin actions for security auditing and debugging purposes.
add_action('admin_init', function() { Implement a honeypot field in forms to detect and block bot submissions.
add_action('comment_form', function() { Remove unnecessary fields from the WooCommerce checkout form.
add_filter('woocommerce_checkout_fields', function($fields) { Add custom fields to the WooCommerce checkout form for additional information.
add_action('woocommerce_after_order_notes', function($checkout) { Show or hide payment gateways based on cart total, product categories, or other conditions.
add_filter('woocommerce_available_payment_gateways', function($gateways) { Add custom validation rules to WooCommerce checkout fields.
add_action('woocommerce_checkout_process', function() { Customize the "Add to Cart" button text for different product types or conditions.
add_filter('woocommerce_product_add_to_cart_text', function($text, $product) { Hide product prices for logged-out users to encourage registration.
add_filter('woocommerce_get_price_html', function($price, $product) { Display dynamic product badges based on stock status, sale status, or custom conditions.
add_action('woocommerce_before_shop_loop_item_title', function() { Display a visual progress bar showing remaining stock quantity for products.
add_action('woocommerce_single_product_summary', function() { Automatically preselect product variations based on URL parameters or user preferences.
jQuery(document).ready(function($) { Register custom order statuses for WooCommerce orders to match your workflow.
add_action('init', function() { Automatically mark virtual product orders as completed upon payment.
add_action('woocommerce_thankyou', function($order_id) { Synchronize order meta data with external systems or update related records.
add_action('woocommerce_checkout_update_order_meta', function($order_id) { Customize the data returned by WordPress REST API endpoints.
add_filter('rest_prepare_post', function($response, $post) { Create custom authentication middleware for REST API endpoints.
add_filter('rest_authentication_errors', function($result) { Add pagination metadata and helpers to REST API responses.
function add_pagination_to_response($response, $request) { Validate REST API response data against a defined schema.
function validate_response_schema($data, $schema) { Implement JSON Web Token authentication for WordPress REST API.
add_filter('determine_current_user', function($user_id) { Configure CORS headers for cross-origin REST API requests.
add_action('rest_api_init', function() { Implement API key authentication for REST API endpoints.
add_filter('rest_authentication_errors', function($result) { Create an endpoint to receive and process webhooks from external services.
add_action('rest_api_init', function() { Implement automatic retry logic for failed webhook deliveries.
function retry_webhook($webhook_id, $max_retries = 3) { Validate webhook payloads using cryptographic signatures for security.
function validate_webhook_signature($payload, $signature, $secret) { Configure CSS custom properties (variables) for dynamic theming and design tokens.
:root { Generate a consistent typography scale using PHP for theme.json or CSS.
function generate_typography_scale($base_size = 16, $ratio = 1.25) { Implement a complete dark mode system with user preference detection and toggle.
const darkMode = { Sync Tailwind CSS configuration with WordPress theme.json settings.
module.exports = { Create a centralized component registry system for reusable theme components.
class Component_Registry { Implement advanced scheduled publishing with custom conditions and notifications.
add_action('wp_scheduled_delete', function() { Automatically create internal links between related posts based on keywords or tags.
add_filter('the_content', function($content) { Integrate AI services to automatically generate or enhance content.
add_action('save_post', function($post_id) { Automatically convert form submissions into WordPress posts or custom post types.
add_action('gform_after_submission', function($entry, $form) { Send automated emails based on user activity, post updates, or custom events.
add_action('wp_insert_post', function($post_id, $post) { Create a tailored API route (e.g., /wp-json/my-site/v1/latest) to fetch specific data efficiently, reducing payload size for Headless or JS-heavy sites.
add_action('rest_api_init', function() {