<?php
class OtherShop
{
function thing()
{
print "thing\n";
}
function andAnotherthing()
{
print "another thing\n";
}
}
class Delegator
{
private $thirdpartyShop;
function __construct()
{
$this->thirdpartyShop = new OtherShop();
}
function __call($method, $args)
{
if (method_exists($this->thirdpartyShop, $method)) {
return $this->thirdpartyShop->{$method}();
}
}
}
$d = new Delegator();
$d->thing();
<?php
class Delegator
{
function __construct()
{
$this->delegate = NULL;
}
function operation()
{
if (method_exists($this->delegate, "thing")) {
return $this->delegate->thing();
}
return 'default implementation';
}
}
class Delegate
{
function thing()
{
return 'Delegate Implementation';
}
}
$a = new Delegator();
print "{$a->operation()}\n";
$a->delegate = 'A delegate may be any object';
print "{$a->operation()}\n";
$a->delegate = new Delegate();
print "{$a->operation()}\n";
<?php
class Delegator extends Object
{
}
abstract class DelegatorMethods
{
function delegate($delegated_methods)
{
$delegated_methods = func_get_args();
$receiver = array_pop($delegated_methods);
if (empty($delegated_methods)) {
trigger_error('The last argument to delegate() must be an object or a string representing a class or method', E_USER_ERROR);
} else {
$class = get_called_class();
$methods =& call_class_method($class, 'methods');
foreach ($delegated_methods as $delegated_method) {
if (!isset($methods[$delegated_method])) {
$methods[$delegated_method] = array();
}
array_unshift($methods[$delegated_method], array($receiver, $delegated_method));
}
}
}
}
Delegator::extend('DelegatorMethods');
<?php
class OtherShop
{
function thing()
{
print "thing\n";
}
function andAnotherthing($a, $b)
{
print "another thing ({$a}, {$b})\n";
}
}
class Delegator
{
private $thirdpartyShop;
function __construct()
{
$this->thirdpartyShop = new OtherShop();
}
function __call($method, $args)
{
if (method_exists($this->thirdpartyShop, $method)) {
return call_user_func_array(array($this->thirdpartyShop, $method), $args);
}
}
}
$d = new Delegator();
$d->andAnotherThing("a", "b");
