Question

I’m using a destructor to close the db connection.

    function __destruct(){
        var_dump($this->dblink);
        mysql_close($this->dblink);
    }

var dump gives me

resource(7) of type (mysql link) NULL 

and the mysql_close() gives me:

Warning: mysql_close() expects parameter 1 to be resource, null given     

Any thoughts?

EDIT
Thanks to the replies I found the issue. destruct is being called by another parent class. Pretty obvious to me now.

THANKS

Answer 1

The object is automatically destructed when the script is finished. The resource is freed as well. If the resource is freed before the object is destructed, you cannot close it. So, only close it if you need the connection to be closed before the script terminates. It is no use closing it when the script is already finishing. All resources are closed and cleaned up automatically.