PDOException Object
(
    [message:protected] => SQLSTATE[HY000] [1040] Too many connections
    [string:Exception:private] => 
    [code:protected] => 1040
    [file:protected] => /data/website/DB.php
    [line:protected] => 14
    [trace:Exception:private] => Array
        (
            [0] => Array
                (
                    [file] => /data/website/DB.php
                    [line] => 14
                    [function] => __construct
                    [class] => PDO
                    [type] => ->
                    [args] => Array
                        (
                            [0] => mysql:host=127.0.0.1;dbname=news
                            [1] => wangyinews
                            [2] => Irk818$#12
                        )

                )

            [1] => Array
                (
                    [file] => /data/website/index.php
                    [line] => 89
                    [function] => __construct
                    [class] => DB
                    [type] => ->
                    [args] => Array
                        (
                            [0] => Array
                                (
                                    [dbname] => news
                                    [username] => wangyinews
                                    [password] => Irk818$#12
                                    [port] => 3306
                                    [host] => 127.0.0.1
                                )

                        )

                )

        )

    [previous:Exception:private] => 
    [errorInfo] => 
)
<br />
<b>Fatal error</b>:  Uncaught Error: Call to a member function prepare() on null in /data/website/DB.php:46
Stack trace:
#0 /data/website/index.php(91): DB-&gt;getNewsTitleByCategory('\xE7\x94\xB5\xE5\xBD\xB1', 1000)
#1 {main}
  thrown in <b>/data/website/DB.php</b> on line <b>46</b><br />