add_option_update_handler()

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参数

$option_group

(string)
(Required)
A settings group name. Should correspond to a whitelisted option key name. Default whitelisted option key names include 'general', 'discussion', 'media', 'reading', 'writing', 'misc', 'options', and 'privacy'.

$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 value: ''