How to update option field in database on clicking the publish button in customizer

When ‘publish’ is clicked in customizer, the option ‘theme_mods_THEMENAMED’ is updated. An function/action could be added See https://developer.wordpress.org/reference/functions/add_action/ on the wordpress actions

add_option_(option_name) and

update_option_(option_name)

See https://codex.wordpress.org/Plugin_API/Action_Reference#Administrative_Actions. The new function could then save what ever option you want to update.

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Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)