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apply_filters( 'the_category', string $thelist, string $separator, string $parents )

Filters the category or list of categories.

Parameters

$thelist: (string) List of categories for the current post.
$separator: (string) Separator used between the categories.
$parents: (string) How to display the category parents. Accepts 'multiple', 'single', or empty.

Source

File: wp-includes/category-template.php

Used By

Used By	Description
wp-admin/includes/class-walker-category-checklist.php: Walker_Category_Checklist::start_el()	Start the element output.
wp-admin/includes/template.php: wp_popular_terms_checklist()	Retrieve a list of the most popular terms from the specified taxonomy.
wp-admin/includes/template.php: wp_link_category_checklist()	Outputs a link category checklist element.
wp-includes/category-template.php: get_the_category_list()	Retrieves category list for a post in either HTML list or custom format.

Changelog

Version	Description
1.2.0	Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/hooks/the_category