WP Hooks – Reference Cheatsheet

Unlock the power of WordPress development with our comprehensive WordPress Hooks Cheatsheet. As a professional WP developer, delve into the essential hooks that drive customization and functionality. From ‘init’ for initialization tasks to ‘after_setup_theme’ for theme setup, each hook is explained in easy-to-understand terms. Boost your development skills, prioritize dos and don’ts, and discover alternate options. Master the art of WordPress development with our go-to WordPress Hooks Cheatsheet. 

WordPress Hooks Reference Cheatsheet:

HookBest UsageSample CodeDosDon'tsAlternatesSupported PHP VersionsSupported WordPress Versions
initInitialization tasks

add_action('init', 'my_custom_function')

- Registering post types and taxonomies- Heavy operations that could slow down the site- wp_loaded5.2+1.5+
wp_footerAdding content to the footer

add_action('wp_footer', 'add_content_to_footer')

- Inserting scripts or content before the closing tag- Heavy operations that could slow down page load- wp_head5.2+1.5+
user_registerHandling user registration

add_action('user_register', 'handle_user_registration')

- Executing actions after a new user is registered- Time-consuming operations in this hook- wp_insert_user5.2+2.0+
admin_initInitialization tasks for the admin area

add_action('admin_init', 'admin_custom_init')

- Performing tasks specific to the admin area- Heavy operations that could slow down admin pages- init5.2+1.5+
template_redirectCustomizing template redirection

add_action('template_redirect', 'custom_template_redirect')

- Redirecting users based on custom conditions- Overusing redirects can confuse users- wp_redirect5.2+1.5+
post_updatedHandling post update actions

add_action('post_updated', 'handle_post_update')

- Executing actions after a post is updated- Heavy operations that could slow down post updating- save_post5.2+2.6+
wp_loginCustomizing actions on user login

add_action('wp_login', 'customize_user_login')

- Executing actions when a user logs in- Lengthy processes that delay login completion- wp_logout5.2+2.5+
wp_logoutCustomizing actions on user logout

add_action('wp_logout', 'customize_user_logout')

- Executing actions when a user logs out- Lengthy processes that delay logout completion- wp_login5.2+2.5+
get_search_formCustomizing the search form output

add_filter('get_search_form', 'customize_search_form')

- Modifying the HTML output of the search form- Drastically changing the search form structure- get_search_form (for complete replacement)5.2+2.7+
heartbeat_receivedHandling Heartbeat API data reception

add_action('heartbeat_received', 'handle_heartbeat_data')

- Processing data received from Heartbeat API- Heavy data processing in this hook- heartbeat_send5.2+3.6+
after_setup_themeTheme setup tasks

add_action('after_setup_theme', 'theme_custom_setup')

- Performing tasks after the theme is set up- Heavy operations that could slow down theme setup- wp_loaded5.2+1.5+
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