add_action()
Function: Adds a callback function to an action hook.
Source: wp-includes/plugin.php:441
register_initial_settings()
Function: Registers default settings available in WordPress.
Source: wp-includes/option.php:2141
register_setting()
Function: Registers a setting and its data.
Source: wp-includes/option.php:2417
unregister_setting()
Function: Unregisters a setting.
Source: wp-includes/option.php:2528
get_registered_settings()
Function: Retrieves an array of registered settings.
Source: wp-includes/option.php:2617
filter_default_option()
Function: Filters the default value for the option.
Source: wp-includes/option.php:2640
add_filter()
Function: Adds a callback function to a filter hook.
Source: wp-includes/plugin.php:121
register_setting_args
Filter Hook: Filters the registration arguments when registering a setting.
Source: wp-includes/option.php:2451
has_filter()
Function: Checks if any filter has been registered for a hook.
Source: wp-includes/plugin.php:281
apply_filters()
Function: Calls the callback functions that have been added to a filter hook.
Source: wp-includes/plugin.php:173