<?php
interface handle
{
public function action($a, $b);
}
class handle1 implements handle
{
public function action($a, $b)
{
return $a + $b;
}
}
class handle2 implements handle
{
public function action($a, $b)
{
return $a - $b;
}
}
class action
{
public function dosome(handle $handle, $a, $b)
{
return $handle->action($a, $b);
}
}
$action = new action();
var_dump($action->dosome(new handle1(), 1231, 2131));
var_dump($action->dosome(new handle2(), 1231, 2131));
//it is so easy!