create new sites without using wp-signup.php?

They will have to be redirected somewhere, but you can create a customized signup page if you wish.

1. Create a /signup/ page using a page template with as much or as little code as you need from the original wp-signup.php

2. Add an mu-plugin:

<?php
add_filter( 'wp_signup_location', 'my_signup_page' );
	function my_signup_page( $location ) {
		return 'https://www.domainname/signup/';
	}
?>

Other hints:
https://www.ads-software.com/support/topic/creating-a-custom-wp-signup-page?replies=8

Hey david thanks for the hints ,

What i am trying to do is allow users to create there blog in 3 step signup process,
1.choose the site title ,tagline ,blog description as it is now in signup process ,
2.step 2 is to choose a theme which are enabled in the network,
3.customize the theme before saving and then if the click save it should create there blog .

I will try to create the custom signup page can you please tell me how to achieve this step by step sorry i am new to wordpress but i know little php .Thanks again

Hi david

Should i create a new folder named mu-plugin and add the code mentioned below in a php file ?

Hi david ,

Somehow i have used javascript and mu theme select plugins code and achived first two steps ,is it possible to allow users to make theme customiztion like how they do in wordpress.com step 3 after selecting the theme they are giving an option to cuztomize it ,like that i should do .How to do this ,Can you help me in this ?