wp-includes/class-wp-customize-setting.php:657Set the root value for a setting, especially for multidimensional ones.
$valuemixedbool protected function set_root_value( $value ) { $id_base = $this->id_data['base']; if ( 'option' === $this->type ) { $autoload = true; if ( isset( self::$aggregated_multidimensionals[ $this->type ][ $this->id_data['base'] ]['autoload'] ) ) { $autoload = self::$aggregated_multidimensionals[ $this->type ][ $this->id_data['base'] ]['autoload']; } return update_option( $id_base, $value, $autoload ); } elseif ( 'theme_mod' === $this->type ) { set_theme_mod( $id_base, $value ); return true; } else { /* * Any WP_Customize_Setting subclass implementing aggregate multidimensional * will need to override this method to obtain the data from the appropriate * location. */ return false; } }Introduced in 4.4.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-customize-setting.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.