How to implement initialize

About how initialize implements the assumption that class a, B, base, and a and B inherit base,
A and B allow a method initialize ();

If new N times:
$ Obj = new ();
$ Obj = new ();
$ Obj = new ();
$ Obj = new B ();
$ Obj = new B ();
$ Obj = new B ();

Execute only one a-> initialize (); and one B-> initialize ();

Initialize mainly replaces the _ construct method in the framework.
Phalcon implements this function, but phalcon is a framework written in C. can PHP achieve this effect?

Reply to discussion (solution)

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

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

@ $ V ++;
Why does "@" match this sentence?