astra_get_author_id()

function astra_get_author_id() {
	global $post;
	if ( isset( $post->post_author ) ) {
		$author_id = $post->post_author;
	} elseif ( is_callable( 'get_the_author_meta' ) ) {
		$author_id = get_the_author_meta( 'ID' );
	} else {
		$author_id = 1;
	}
	return $author_id;
}