do_action( ‘switch_theme’, string $new_name, WP_Theme $new_theme, WP_Theme $old_theme )

Fires after the theme is switched.

Description

See ‘after_switch_theme’.

Parameters

$new_namestring
Name of the new theme.
$new_themeWP_Theme
WP_Theme instance of the new theme.
$old_themeWP_Theme
WP_Theme instance of the old theme.

More Information

switch_theme is triggered when the blog’s theme is changed. Specifically, it fires after the theme has been switched but before the next request. Theme developers should use this hook to do things when their theme is deactivated.

Theme functions attached to this hook are only triggered in the theme being deactivated. To do things when your theme is activated, use after_switch_theme.

Functions attached to this action hook receive one parameter: a string with the name of the new theme being activated.

Source

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

Changelog

VersionDescription
4.5.0Introduced the $old_theme parameter.
1.5.0Introduced.

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