wp_signup_url() function proposal

[virgodesign]

Hello everyone,

I noticed that WordPress already provides several helper functions to retrieve authentication-related URLs, such as:

wp_login_url()
wp_logout_url()
wp_registration_url()

However, there does not seem to be an equivalent function for retrieving the Multisite signup URL.

Developers currently need to manually build or retrieve the signup URL, typically using network_site_url( 'wp-signup.php' ). This may create inconsistency and make registration/signup URL handling less uniform.

Additionally, WordPress already relies in multiple places on the following filter:

apply_filters( 'wp_signup_location', network_site_url( 'wp-signup.php' ) );

This seems to indicate that there is already a need for a centralized and filterable signup URL mechanism, but currently there is no dedicated global helper function encapsulating this behavior.

I would like to propose adding a new function:

wp_signup_url()

Possible behavior:

• In Multisite, return the filtered network signup page URL.
• In non-Multisite installations, it could return wp_registration_url().

Example implementation idea:

<?php
function wp_signup_url() {

   if( is_multisite() ) {
       return apply_filters( 'wp_signup_location', network_site_url( 'wp-signup.php' ) );
   }

   return wp_registration_url();

}

Benefits:

• Improves API consistency.
• Centralizes signup URL generation logic.
• Ensures consistent application of the wp_signup_location filter.
• Simplifies plugin and theme development.
• Avoids repeated custom implementations across projects.
• Provides a clearer semantic distinction between registration and Multisite signup flows..

I’d be happy to hear feedback about the preferred behavior for non-Multisite installations and whether this could be a useful addition to Core.