bug fix

register_backend.php

@@ -13,16 +13,32 @@ if(isset($_POST['login']) && isset($_POST['password']) && !empty($_POST['login']
 	{
 		if($_POST['password'] === $_POST['passwd_confc'])
 		{
-			if($_POST['type'] === monitored) 
+			if($_POST['type'] === 'monitored') 
+			{
+				try
 				{
 					$user = \BackEnd\User\MonitoredUser::addUser($_POST['login'],$_POST['email'],$_POST['password'],
 					$_POST['name'],$_POST['address'], $_POST['tel']);
 				}
-			else if ($_POST['type'] === supervisor)
+				catch(Exception $e)
+				{
+					header('Location: index.php?err=4');
+					exit;
+				}
+			}
+			else if ($_POST['type'] === 'supervisor')
+			{
+				try
 				{
 					$user = \BackEnd\User\SupervisorUser::addUser($_POST['login'],$_POST['email'],$_POST['password'],
 					$_POST['name'],$_POST['address'], $_POST['tel']);
 					}
+				catch(Exception $e)
+				{
+					header('Location: index.php?err=5');
+					exit;
+				}
+			}
 			else 
 			{
 				header('Location: index.php?err=3');