Update class.MySQL.php

foreach($vars as $key=>$value){
			if(in_array($key, $exclude)){
				continue;
			}
			//$query .= '`' . $key . '` = "' . $value . '", ';
			$query .= "`{$key}` = '{$value}', ";
		}
		
		$query = substr($query, 0, -2);