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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 1000 | break; |
| 1001 | case 'default': |
| 1002 | default: |
| 1003 | $user_email = isset( $_POST['user_email'] ) ? $_POST['user_email'] : ''; |
| 1004 | /** |
| 1005 | * Fires when the site sign-up form is sent. |
| 1006 | * |
| 1007 | * @since 3.0.0 |
| 1008 | */ |
| 1009 | do_action( 'preprocess_signup_form' ); |
| 1010 | if ( is_user_logged_in() && ( 'all' === $active_signup || 'blog' === $active_signup ) ) { |
| 1011 | signup_another_blog( $newblogname ); |
| 1012 | } elseif ( ! is_user_logged_in() && ( 'all' === $active_signup || 'user' === $active_signup ) ) { |
| 1013 | signup_user( $newblogname, $user_email ); |
| 1014 | } elseif ( ! is_user_logged_in() && ( 'blog' === $active_signup ) ) { |
| 1015 | _e( 'Sorry, new registrations are not allowed at this time.' ); |
| 1016 | } else { |
| 1017 | _e( 'You are logged in already. No need to register again!' ); |
| 1018 | } |