Why this variable is null

Class my_connect{       private $conn;       Private  function Get_conn () {            $conn =new mysqli (' localhost ', "root", "", "Test", 3306);            $conn->set_charset ("UTF8");            return $conn;        }        Private  function __destruct () {            if (isset ($this->conn)) {                $this->conn->close ();            }        }        static function Get_instance () {            $new _conn=new my_connect ();            $conn = $new _conn->get_conn ();            return $conn;        }    } When I do $conn =my_connect::get_instance (); To the destructor $conn variable is null, which is not executed  $this->conn->close ();

Reply to discussion (solution)

When setting, do you want to use $this->?

Obviously this step is wrong, this step to determine whether the variable has been defined, private $conn; Here you have defined, although nothing

if (Isset ($this->conn)) {

Just change it.

if ($this->conn) {

I went to see the wrong ....

Get_conn is a private method,

Private  function Get_conn

Switch

Public  function Get_conn

Can

This class you can optimize optimization, still need to optimize

Mysqli, why not just use mysql_connect?

Watch the crowd.

