Index: branches/5.2.x/core/kernel/db/db_connection.php
===================================================================
diff -u -N -r16662 -r16710
--- branches/5.2.x/core/kernel/db/db_connection.php	(.../db_connection.php)	(revision 16662)
+++ branches/5.2.x/core/kernel/db/db_connection.php	(.../db_connection.php)	(revision 16710)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: db_connection.php 16662 2021-01-05 09:06:10Z alex $
+* @version	$Id: db_connection.php 16710 2022-07-08 14:36:28Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -63,10 +63,9 @@
 		/**
 		 * Function to handle sql errors
 		 *
-		 * @var Array|string
-		 * @access public
+		 * @var callable
 		 */
-		public $errorHandler = '';
+		protected $errorHandler = '';
 
 		/**
 		 * Error code
@@ -168,10 +167,10 @@
 			$this->serverIndex = $server_index;
 
 			if ( !$error_handler ) {
-				$this->errorHandler = Array(&$this, 'handleError');
+				$this->setErrorHandler(array(&$this, 'handleError'));
 			}
 			else {
-				$this->errorHandler = $error_handler;
+				$this->setErrorHandler($error_handler);
 			}
 
 			$this->_captureStatistics = defined('DBG_CAPTURE_STATISTICS') && DBG_CAPTURE_STATISTICS && !(defined('ADMIN') && ADMIN);
@@ -932,6 +931,18 @@
 			return is_numeric($row['Seconds_Behind_Master']) ? $row['Seconds_Behind_Master'] : false;
 		}
 
+		/**
+		 * Sets an error handler.
+		 *
+		 * @param callable $error_handler Error handler.
+		 *
+		 * @return void
+		 */
+		public function setErrorHandler(callable $error_handler)
+		{
+			$this->errorHandler = $error_handler;
+		}
+
 	}