View difference between Paste ID: DQH8Rggi and aVaXD8vW

 add_action('personal_options_update', 'check_display_name');
 add_action('edit_user_profile_update', 'check_display_name');
 function check_display_name($user_id) {
         global $wpdb;
-        $unique = $wpdb->get_var($wpdb->prepare("SELECT COUNT(ID) FROM $wpdb->users WHERE display_name = %s AND ID <> %d", $_POST['display_name'], $_POST['user_id']));
+        $err['display'] = $wpdb->get_var($wpdb->prepare("SELECT COUNT(ID) FROM $wpdb->users WHERE display_name = %s AND ID <> %d", $_POST['display_name'], $_POST['user_id']));
-        if($unique >=1) {
+        $err['nick'] = $wpdb->get_var($wpdb->prepare("SELECT COUNT(ID) FROM $wpdb->users as users, $wpdb->usermeta as meta WHERE users.ID = meta.user_id AND meta.meta_key = 'nickname' AND meta.meta_value = %s AND users.ID <> %d", $_POST['nickname'], $_POST['user_id']));
-                $_POST['display_name'] = $_POST['username'];
+        foreach($err as $key => $e) {
-                add_filter('user_profile_update_errors', 'check_dm_field', 10, 3);
+                if($e >= 1) {
                         $err[$key] = $_POST['username'];
                         add_filter('user_profile_update_errors', "check_{$key}_field", 10, 3);
-
+                }
-function check_dm_field($errors, $update, $user) {
+
 }
 function check_display_field($errors, $update, $user) {
         $errors->add('display_name_error',__('Sorry, Display Name is already in use. It needs to be unique.'));
-add_action('personal_options_update', 'check_nickname_name');
+
-add_action('edit_user_profile_update', 'check_nickname_name');
+
-function check_nickname_name($user_id) {
+
         $errors->add('display_nick_error',__('Sorry, Nickname is already in use. It needs to be unique.'));
-        $unique = $wpdb->get_var($wpdb->prepare("SELECT COUNT(ID) FROM $wpdb->users as users, $wpdb->usermeta as meta
+
-		 WHERE users.ID = meta.user_id
+