Register a setting and its sanitization callback

• register_setting()

$option_group string Required

A settings group name. Should correspond to an allowed option key name.
Default allowed option key names include 'general', 'discussion', 'media', 'reading', 'writing', and 'options'.

$option_name string Required

The name of an option to sanitize and save.

$sanitize_callback callable Optional

A callback function that sanitizes the option's value.

Default: ''

File: wp-admin/includes/deprecated.php. View all references

function add_option_update_handler( $option_group, $option_name, $sanitize_callback = '' ) {
	_deprecated_function( __FUNCTION__, '3.0.0', 'register_setting()' );
	register_setting( $option_group, $option_name, $sanitize_callback );
}