_delete_site_logo_on_remove_custom_logo() │ WP 1.0

Deletes the site_logo when the custom_logo theme mod is removed.

Internal function — this function is designed to be used by the kernel itself. It is not recommended to use this function in your code.

No Hooks.

Return

null. Nothing (null).

Usage

_delete_site_logo_on_remove_custom_logo( $old_value, $value );
$old_value(array) (required)
Previous theme mod settings.
$value(array) (required)
Updated theme mod settings.

_delete_site_logo_on_remove_custom_logo() code WP 6.5.2

wp-includes/blocks/site-logo.php 
function _delete_site_logo_on_remove_custom_logo( $old_value, $value ) {
	global $_ignore_site_logo_changes;

	if ( $_ignore_site_logo_changes ) {
		return;
	}

	// If the custom_logo is being unset, it's being removed from theme mods.
	if ( isset( $old_value['custom_logo'] ) && ! isset( $value['custom_logo'] ) ) {
		delete_option( 'site_logo' );
	}
}