TalkPHP - Call a function from class 2, inside class 1

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Call a function from class 2, inside class 1

Hello! I would like to know the easiest, or best way to do that; call a function from another class inside a class. Both classes are of course included in the page where I want the output.

How should I start learning to do this? Which is the best method for a new to classes guy like me? :)

Mostly it'll just be that I want to connect and query to the MySQL via. my database class, from my, for instance, News class.

Something like this, probably:

PHP Code:


		
			
class TestClass
{
    protected $libraries = array();
    
    public function using($name, $obj)
    {
        $this->libraries[$name] = $obj;
    }
    
    public function someMethod()
    {
        return $this->libraries['db']->query('some query here');
    }
}

// Example
$db = new PDO(...); // create a new db connection...etc, etc.

$myObject = new TestClass();
$myObject->using('db', $db);

var_dump($myObject->someMethod());

This way, you could have all the objects that you want to use at your disposal.