is_child_theme()

Whether a child theme is in use.

Return

(bool) true if a child theme is in use, false otherwise.

function is_child_theme() {
	return ( TEMPLATEPATH !== STYLESHEETPATH );
}

Used By
Used By	Description
wp-includes/theme.php: get_editor_stylesheets()	Retrieve any registered editor stylesheets
wp-includes/theme.php: validate_current_theme()	Checks that current theme files ‘index.php’ and ‘style.css’ exists.
wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::prepare_starter_content_attachments()	Prepare starter content attachments.

Changelog
Version	Description
WP-3.0.0	Introduced.