php - Use of included class in another class -

i'm trying use database class (adodb php) don't know how use in class. example:

<?php include_once("adodb.inc.php"); $conn = newadoconnection('mysql');  class contacts {     public function getdata(){         $conn->connect(...);         //do     } } ?> 

i think problem can not call $conn because defined outside class.

notice: undefined variable: conn

fatal error: call member function connect() on non-object

maybe i'm doing wrong way, don't know how fix this.

can please me out? lot!

why not ?!

<?php include_once("adodb.inc.php"); $conn = newadoconnection('mysql');  $conn->connect(...);  class contacts {      protected $_connection;      public function __construct($conn)     {         $this->_connection = $conn;     }     public function getdata(){          //do      } }  $contacts = new contacts($conn);  $foobar = new foobar($conn);  ?> 

it makes sense establish connection outside class, , pass in workable object. , of-course share same connection object among classes require it.

p.s reallly recommend drop adodb , start learning pdo.