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我对PHP5/OOP很陌生,无法真正理解下面的代码是如何工作的。在研究__autoload()函数时,在PHP.net文档中找到它。PHP OOP:这段代码是如何工作的?
我该怎么称呼它? new MyClass1();
或autoloader::model('myModel');
?
class autoloader {
public static $loader;
public static function init()
{
if (self::$loader == NULL)
self::$loader = new self();
return self::$loader;
}
public function __construct()
{
spl_autoload_register(array($this,'model'));
spl_autoload_register(array($this,'helper'));
spl_autoload_register(array($this,'controller'));
spl_autoload_register(array($this,'library'));
}
public function library($class)
{
set_include_path(get_include_path().PATH_SEPARATOR.'/lib/');
spl_autoload_extensions('.library.php');
spl_autoload($class);
}
public function controller($class)
{
$class = preg_replace('/_controller$/ui','',$class);
set_include_path(get_include_path().PATH_SEPARATOR.'/controller/');
spl_autoload_extensions('.controller.php');
spl_autoload($class);
}
public function model($class)
{
$class = preg_replace('/_model$/ui','',$class);
set_include_path(dirname(__FILE__) . PATH_SEPARATOR.'/model/');
spl_autoload_extensions('.model.php');
spl_autoload($class);
}
public function helper($class)
{
$class = preg_replace('/_helper$/ui','',$class);
set_include_path(get_include_path().PATH_SEPARATOR.'/helper/');
spl_autoload_extensions('.helper.php');
spl_autoload($class);
}
}