Random WordPress Function

Function Signature:

the_category_id

Function Description:

Returns or prints a category ID.

Function Examples:

⚠️ Examples below are generated with GPT-3 once every hour. Do not take them too seriously.
Consider them as some extra input in your learning process - reason about them. Will it work? What could fail?

// Basic example: Display the ID of the first category assigned to a post
$post_categories = get_the_category();
if ( $post_categories ) {
    the_category_id( $post_categories[0]->term_id );
}

// Handling multiple categories: Display the IDs of all categories assigned to a post
$post_categories = get_the_category();
if ( $post_categories ) {
    foreach ( $post_categories as $category ) {
        the_category_id( $category->term_id );
    }
}

// Avoiding errors: Check if post has categories before using the_category_id function
$post_categories = get_the_category();
if ( $post_categories ) {
    the_category_id( $post_categories[0]->term_id );
} else {
    echo 'No categories found for this post.';
}