say i have an option
update_option('pp_options', $options);
when i want to create a form for that, i learnt that i have to create a settings group
register_setting('pp_options_group', 'pp_options');
then in the form do
settings_fields('pp_options_group')
but i dont really what is the settings group actually for? i know its to do with sanitization but why the need to create a group for sanitization?
Sanitization is secondary function. Main is:
The register_setting and unregister_setting functions add and remove options from a whitelist of allowed options that the form is able to save. They can also name a sanitize callback function as a security measure to check each option’s value. ( Register settings )
Technically $option_group argument is used for:
- array key in global array of whitelisted options
- part of filter name to run sanitization callback
