get page id in wordpress code example

Example 1: get_the_id wordpress

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

Example 2: get wordpress id

echo get_the_ID();

Example 3: get the current page id in wordpress

$page_id = get_queried_object_id();