switch_theme action-hook . WP 1.5.0

Fires after the theme is switched.

Usage

add_action( 'switch_theme', 'action_function_name_6357', 10, 3 );
function action_function_name_6357( $new_name, $new_theme, $old_theme ){
	// action...
}

$new_name(string)

Name of the new theme.

$new_theme(WP_Theme)

WP_Theme instance of the new theme.

$old_theme(WP_Theme)

WP_Theme instance of the old theme.

Notes

• Since 4.5.0 Introduced the $old_theme parameter.

Where the hook is called

do_action( 'switch_theme', $new_name, $new_theme, $old_theme );

Where the hook is used (in WP core)