+        # Laengen-Pruefung\r
+\r
+        if(isset($user_field_data['min']) && $user_field_data['min']) {\r
+            if(strlen($user_field_content) < $user_field_data['min']) {\r
+                if(isset($user_field_data['errors']['too_short'])) {\r
+                    show_user_error($user_field_data['errors']['too_short']);\r
+                }\r
+                else {\r
+                    show_fatal($err_indiv_errmsg_miss,array('ERRMSG' => 'too_short', 'INDIVIDUAL' => $user_field));\r
+                }\r
+            }\r
+        }\r
+\r
+        if(isset($user_field_data['min']) && $user_field_data['max']) {\r
+            if(strlen($user_field_content) > $user_field_data['max']) {\r
+                if(isset($user_field_data['errors']['too_long'])) {\r
+                    show_user_error($user_field_data['errors']['too_long']);\r
+                }\r
+                else {\r
+                    show_fatal($err_indiv_errmsg_miss,array('ERRMSG' => 'too_long', 'INDIVIDUAL' => $user_field));\r
+                }\r
+            }\r
+        }\r
+\r
+        # Pruefung gegen frei definierbare Pruef-Funktion\r
+\r
+        if(isset($user_field_data['check']) && $user_field_data['check'] != '') {\r
+            if(function_exists($user_field_data['check']) && call_user_func($user_field_data['check'],$user_field_content) === false) {\r
+                if(isset($user_field_data['errors']['check_fail'])) {\r
+                    show_user_error($user_field_data['errors']['check_fail']);\r
+                }\r
+                else {\r
+                    show_fatal($err_indiv_errmsg_miss,array('ERRMSG' => 'check_fail', 'INDIVIDUAL' => $user_field));\r
+                }\r
+            }\r
+        }\r
+\r
+        # Pruefung gegen frei definierbaren regulaeren Ausdruck\r
+\r
+        if(isset($user_field_data['regex']) && $user_field_data['regex'] != '') {\r
+            if(!preg_match($user_field_data['regex'],$user_field_content)) {\r
+                if(isset($user_field_data['errors']['match_fail'])) {\r
+                    show_user_error($user_field_data['errors']['match_fail']);\r
+                }\r
+                else {\r
+                    show_fatal($err_indiv_errmsg_miss,array('ERRMSG' => 'match_fail', 'INDIVIDUAL' => $user_field));\r
+                }\r
+            }\r
+        }\r
+\r
+        # Formularfeld durch frei definierbare Funktion bearbeiten\r
+\r
+        if(isset($user_field_data['prepare']) && $user_field_data['prepare'] != '') {\r
+            if(function_exists($user_field_data['check'])) {\r
+                $user_field_content = call_user_func($user_field_data['prepare'],$user_field_content);\r
+            }\r
+        }\r
+\r
+        # Name der Template-Variable ermitteln\r
+\r
+        if(isset($user_field_data['tpl_var']) && $user_field_data['tpl_var'] != '') {\r
+            $tpl_var = $user_field_data['tpl_var'];\r
+        }\r
+        else {\r
+            $tpl_var = 'USER_'.$user_field;\r