如何调用类方法在类B方法中并使类B方法和参数可从类A方法中获得？

Question

类用户 {

private $_var_1 = 10; 
    private $_var_2 = 20; 

    private function _preExecute() { 
    //do something here before executing sub-class's method 
    } 

    private function _postExecute() { 
    //do something here after executing sub-class's method 
    } 

    private function _anyMethod() { 
    echo "Hello!"; 
    } 

    public function execute($action) { 
    $this->_preExecute(); 
    $obj = new __CLASS__."_".$action; 
    $obj->execute(); 
    $this->_postExecute(); 
    } 

} 

class User_Add 
{ 

    public function execute() { 
    echo $this->_var1; 
    echo $this->_var2; 
    parent::_anyMethod(); 
    } 

} 

$user = new User(); 
$user->execute("Add"); 

所以，你可以看到我希望能够访问用户类的变量和从类User_Add方法，是有可能在PHP 5.2或更高版本？

Answer 1

当然！

class User_Add extends User 

但是您的函数和User类中的变量必须被保护或公开才能被User_Add类访问。在php文档中看看inheritance。