Why is pre_get_posts hook invoked multiple times?

The pre_get_posts action runs any time posts are queried. This obviously includes the main query for displaying your latest posts or the current page, but it also includes any other time posts are queried. So that would include any use of WP_Query() or get_posts() in a plugin or your templates, any Recent Posts or similar … Read more

Check when a setting has been changed

The update_option hook can use used to run an action when an option value has changed: function wpse_330204_option_updated( $option_name, $old_value, $new_value ) { if ( $option_name === ‘name_of_option_you_want_to_check’ ) { if ( $new_value !== $old_value ) { // Value has changed, run code here. } } } add_action( ‘update_option’, ‘wpse_330204_option_updated’, 10, 3 ); Just replace … Read more

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