WordPress get_current_post_type

<?php /** * gets the current post type in the WordPress Admin */ function get_current_post_type() { global $post, $typenow, $current_screen; //we have a post so we can just get the post type from that if ( $post && $post->post_type ) return $post->post_type; //check the global $typenow - set in admin.php elseif( $typenow ) return $typenow; //check the global $current_screen object - set in sceen.php elseif( $current_screen && $current_screen->post_type ) return $current_screen->post_type; //lastly check the post_type querystring elseif( isset( $_REQUEST['post_type'] ) ) return sanitize_key( $_REQUEST['post_type'] ); //we do not know the post type! return null; } ?>