How do i hide the auto-generated custom field that’s created when update_post_meta() is called?

If the meta field starts with an underscore, it will be hidden in the interface by adding the class hidden to the <tr> element. You could also apply this class by yourself using Javascript, the <tr> element has an id of meta-{$custom_field_id}.

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