Source View: pre_user_display_name

To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).

Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

  • Action hooks look like this: do_action( "hook_name" )
  • Filter hooks look like this: 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.

Source View

Line Code
1289      if ( empty($user_email) )
1290           $user_email = '';
1291      $user_email = apply_filters('pre_user_email', $user_email);
1292
1293      if ( !$update && ! defined( 'WP_IMPORTING' ) && email_exists($user_email) )
1294           return new WP_Error('existing_user_email', __('This email address is already registered.') );
1295
1296      if ( empty($display_name) )
1297           $display_name = $user_login;
1298      $display_name = apply_filters('pre_user_display_name', $display_name);
1299
1300      if ( empty($nickname) )
1301           $nickname = $user_login;
1302      $nickname = apply_filters('pre_user_nickname', $nickname);
1303
1304      if ( empty($first_name) )
1305           $first_name = '';
1306      $first_name = apply_filters('pre_user_first_name', $first_name);
1307