apply_filters( 'the_category_list', WP_Term[] $categories, int|false $post_id )

Filters the categories before building the category list.

Parameters

$categories: An array of the post's categories.
$post_id: ID of the post to retrieve categories for.<br> When false, defaults to the current post in the loop.

Source

File: wp-includes/category-template.php

Changelog

Changelog
Version	Description
4.4.0	Introduced.