get post id code example

Example 1: how to get category from post id

get_the_category($post->ID)

Example 2: get_the_id wordpress

function get_the_ID() { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid
    $post = get_post();
    return ! empty( $post ) ? $post->ID : false;
}

Example 3: get wordpress id

echo get_the_ID();

Example 4: get term id by post id

INSIDE TAXONOMY PAGES
$term      = get_queried_object();
$term_id   = $term->term_id;