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Function Name: wp_set_post_categories

Explanation: The wp_set_post_categories function is a powerful WordPress function that allows you to set the categories for a specific post. It is used to assign or update the categories associated with a post.

By using this function, you can easily assign one or multiple categories to a post, or even remove existing categories. This function is particularly useful when you want to programmatically update the categories of a post, instead of manually editing them in the WordPress admin panel.

The function takes two parameters: the post ID and an array of category IDs. The post ID is the unique identifier for the post you want to modify, while the category IDs represent the categories you want to assign to the post.

Example Usage:

Let’s say you have a post with the ID 123 and you want to assign it two categories: "News" (category ID 5) and "Technology" (category ID 8). You can achieve this using the wp_set_post_categories function as follows:

$post_id = 123;
$category_ids = array(5, 8);
wp_set_post_categories($post_id, $category_ids);

In this example, the wp_set_post_categories function is called with the post ID 123 and the array of category IDs [5, 8]. As a result, the post with the ID 123 will have the categories "News" and "Technology" assigned to it.

It’s important to note that this function does not validate the category IDs provided, so make sure to double-check that the category IDs you pass to this function actually exist in your WordPress installation.

In conclusion, the wp_set_post_categories function is a handy tool for managing the categories of WordPress posts programmatically. It simplifies the process of assigning or updating categories for a post, making it a valuable function for developers working on WordPress websites.

Learn More on WordPress.org

WordPress snippets using the wp_set_post_categories function

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