Core Function

wp_get_post_categories()

wp_get_post_categories( mixed $post_id = 0, mixed $args = array() )

Retrieves the list of categories for a post.

Parameters 2 required

Name / Type	Description
int	$post_id Optional. The Post ID. Does not default to the ID of the global $post. Default 0. Required
array	$args Optional. Category query parameters. Default empty array. See WP_Term_Query::__construct() for supported arguments. Required

Return Value

((array)

(array | WP_Error) List of categories. If the `$fields` argument passed via `$args` is 'all' or 'all_with_object_id', an array of WP_Term objects will be returned. If `$fields` is 'ids', an array of category IDs. If `$fields` is 'names', an array of category names. WP_Error object if 'category' taxonomy doesn't exist.

Function Information

Since Version

2.1.0

Source File

wp-includes/post.php