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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 |
|---|---|
| 83 | add_user_to_blog( $id, $user_id, $_POST['new_role'] ); |
| 84 | $update = 'newuser'; |
| 85 | /** |
| 86 | * Fires after a user has been created via the network site-users.php page. |
| 87 | * |
| 88 | * @since 4.4.0 |
| 89 | * |
| 90 | * @param int $user_id ID of the newly created user. |
| 91 | */ |
| 92 | do_action( 'network_site_users_created_user', $user_id ); |
| 93 | } |
| 94 | } |
| 95 | break; |
| 96 | |
| 97 | case 'adduser': |
| 98 | check_admin_referer( 'add-user', '_wpnonce_add-user' ); |
| 99 | if ( !empty( $_POST['newuser'] ) ) { |
| 100 | $update = 'adduser'; |
| 101 | $newuser = $_POST['newuser']; |