2020-05-02 / 4394阅 / 悠然
Determines whether the query is for an existing category archive page.
If the $category parameter is specified, this function will additionally check if the query is for> Conditional Tags article in the Theme Developer Handbook.
(int|string|int[]|string[])
(Optional)
Category ID, name, slug, or array of such to check against.
Default value: ''
(bool)