关于initialize如何实现

[csdn醒哥]

假设有class a、b、base，a、b都继承base，
a、b允许有一个方法initialize();

如果new N次：
$obj = new a();
$obj = new a();
$obj = new a();
$obj = new b();
$obj = new b();
$obj = new b();

只执行一次 a->initialize(); 和一次 b->initialize();

initialize在框架中主要是替代__construct方法。
phalcon实现了这个功能，但是phalcon是C编写的框架，纯PHP能实现这个效果么？

[xuzuning]

class bass {
  function __construct() {
    $this->_initialize();
  }
  function _initialize() {
    static $v;
    @$v++;
    if($v == 1 && method_exists($this, 'initialize')) $this->initialize();
  }
}
class a extends bass {
  function initialize() {
    echo __CLASS__;
  }
}
class b extends bass {
  function initialize() {
    echo __CLASS__;
  }
}

$obj = new a();
$obj = new a();
$obj = new a();
$obj = new b();
$obj = new b();
$obj = new b();

ab

[tata8188]

引用 1 楼 xuzuning 的回复:

class bass {
  function __construct() {
    $this->_initialize();
  }
  function _initialize() {
    static $v;
    @$v++;
    if($v == 1 && method_exists($this, 'initialize')) $this->initialize();
  }
}
class a extends bass {
  function initialize() {
    echo __CLASS__;
  }
}
class b extends bass {
  function initialize() {
    echo __CLASS__;
  }
}

$obj = new a();
$obj = new a();
$obj = new a();
$obj = new b();
$obj = new b();
$obj = new b();

ab

[tata8188]

@$v++; 问一下这句为什么要加“@”符合？