php 代码大全

<?php
class A{

    static function loadById(){
        $class_name = get_called_class();
        $model = new $class_name(‘a‘);
        return $model;
    }
}
class B extends A{
    public $name; 
    public function __construct($str){
        $this->name = $str;
    }
}

echo "beginnn<Br>";
$obj = B::loadById();
echo $obj->name;
?>