(i have a database online that works well online that is accessing the database from the host server)but i copied my database from my host to my localhost on xampp(so as to have a copy on my system), but when i try to access one of the database on my localhost i have the error below, what can i do


Warning: mysql_query() expects parameter 2 to be resource, boolean given in /Applications/XAMPP/xamppfiles/htdocs/comparison/includes/database.php on line 18

Warning: mysql_fetch_array() expects parameter 1 to be resource, null given in /Applications/XAMPP/xamppfiles/htdocs/comparison/includes/database.php on line 27

Warning: mysql_num_rows() expects parameter 1 to be resource, null given in /Applications/XAMPP/xamppfiles/htdocs/comparison/includes/database.php on line 32

Warning: mysql_query() expects parameter 2 to be resource, boolean given in /Applications/XAMPP/xamppfiles/htdocs/comparison/includes/database.php on line 18

Warning: mysql_fetch_array() expects parameter 1 to be resource, null given in /Applications/XAMPP/xamppfiles/htdocs/comparison/includes/database.php on line 27

Warning: mysql_num_rows() expects parameter 1 to be resource, null given in /Applications/XAMPP/xamppfiles/htdocs/comparison/includes/database.php on line 32

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /Applications/XAMPP/xamppfiles/htdocs/comparison/includes/database.php:18) in /Applications/XAMPP/xamppfiles/htdocs/comparison/html/header.php on line 1

Warning: Cannot modify header information - headers already sent by (output started at /Applications/XAMPP/xamppfiles/htdocs/comparison/includes/database.php:18) in /Applications/XAMPP/xamppfiles/htdocs/comparison/html/header.php on line 8