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Function Reference/wp set post categories

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Set categories for a post.

If the post categories parameter is not set, then the default category is going used.

<?php wp_set_post_categories( $post_ID, $post_categories ) ?>

$post_ID

(integer) (optional) Post ID.

Default: 0

$post_categories

(array) (optional) List of categories.

Default: array

Since: 2.1.0

wp_set_post_categories() is located in wp-includes/post.php.