object(PDOException)#3 (8) {
  ["message":protected]=>
  string(43) "SQLSTATE[HY000] [1040] Too many connections"
  ["string":"Exception":private]=>
  string(0) ""
  ["code":protected]=>
  int(1040)
  ["file":protected]=>
  string(43) "/service/website/img22/wwwroot/inc/func.php"
  ["line":protected]=>
  int(1476)
  ["trace":"Exception":private]=>
  array(3) {
    [0]=>
    array(6) {
      ["file"]=>
      string(43) "/service/website/img22/wwwroot/inc/func.php"
      ["line"]=>
      int(1476)
      ["function"]=>
      string(11) "__construct"
      ["class"]=>
      string(3) "PDO"
      ["type"]=>
      string(2) "->"
      ["args"]=>
      array(4) {
        [0]=>
        string(43) "mysql:host=localhost;port=3306;dbname=img22"
        [1]=>
        string(3) "www"
        [2]=>
        string(8) "toefl121"
        [3]=>
        array(1) {
          [1000]=>
          bool(true)
        }
      }
    }
    [1]=>
    array(6) {
      ["file"]=>
      string(43) "/service/website/img22/wwwroot/inc/func.php"
      ["line"]=>
      int(1740)
      ["function"]=>
      string(7) "connect"
      ["class"]=>
      string(2) "db"
      ["type"]=>
      string(2) "->"
      ["args"]=>
      array(1) {
        [0]=>
        array(7) {
          ["database"]=>
          string(8) "mysqlpdo"
          ["host"]=>
          string(9) "localhost"
          ["dbname"]=>
          string(5) "img22"
          ["user"]=>
          string(3) "www"
          ["password"]=>
          string(8) "toefl121"
          ["hostinfo"]=>
          array(1) {
            [0]=>
            string(9) "localhost"
          }
          ["port"]=>
          string(4) "3306"
        }
      }
    }
    [2]=>
    array(4) {
      ["file"]=>
      string(40) "/service/website/img22/wwwroot/index.php"
      ["line"]=>
      int(4)
      ["function"]=>
      string(11) "match_route"
      ["args"]=>
      array(0) {
      }
    }
  }
  ["previous":"Exception":private]=>
  NULL
  ["errorInfo"]=>
  NULL
}
database connect error