Share variables between functions in PHP without using globals

Question

I have a class for interacting with a memcache server. I have different functions for inserting, deleting and retrieving data. Originally each function made a call to

Answer 1

Pass in the MC instance:

class abc
{
    function __construct($mc) {
        $this->mc = $mc;
    }
}    
class def
{
    function __construct($mc) {
        $this->mc = $mc;
    }
}

$mc = new cache_class;
$abc = new abc($mc);

etc.