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Application interfaces and objects are built using PHP classes:
<?php
/**
* App_Foo:: defines an API for implementing Foo backends for App.
*
* @author Jon Parise <jon@horde.org>
* @version $Revision: 1.1 $
* @since App 0.1
* @package app
*/
class App_Foo {
var $params;
function &factory($driver, $params = array())
{
$driver = strtolower($driver);
@include_once dirname(__FILE__) . '/Foo/' . $driver . '.php';
$class = 'App_Foo_' . $driver;
if (class_exists($class)) {
return new $class($params);
} else {
return false;
}
}
function doSomething($argument)
{
// abstract method
}
}
?>
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