get_the_category( int $id = false )
Description #Description
This tag may be used outside The Loop by passing a post id as the parameter.
Note: This function only returns results from the default “category” taxonomy. For custom taxonomies use get_the_terms().
Parameters #Parameters
$id
(int) (Optional) default to current post ID. The post ID.
Default value: false
Return #Return
(WP_Term[]) Array of WP_Term objects, one for each category assigned to the post.
Retrieve post categories.