Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future

Good evening, indeed since PHP5.5 mysql extension is deprecated, so you will have to spend either PDO, or mysqli.

But you can precede your SQL commands with a "@" it disables errors ... 

1	$link = @mysql_connect( 'localhost', 'root', '');

there is another solution that you can use and that i found more practice is to disable all deprecated errors and to do that ad this line to your connexion.php file :

1	error_reporting(E_ALL ^ E_DEPRECATED);