php对象的实现

typedef struct _zend_object ????zend_object;struct _zend_object { ???zend_refcounted_h gc; //引用计数 ???uint32_t ?????????handle; ???zend_class_entry *ce; //所属类 ???const zend_object_handlers *handlers; //对象操作处理函数 ???HashTable ???????*properties; ???zval ?????????????properties_table[1]; //普通属性值数组};

struct _zend_object_handlers { ???int ????????????????????????????????????offset; ???zend_object_free_obj_t ?????????????????free_obj; //释放对象 ???zend_object_dtor_obj_t ?????????????????dtor_obj; //销毁对象 ???zend_object_clone_obj_t ????????????????clone_obj;//复制对象 ???????zend_object_read_property_t ????????????read_property; //读取成员属性 ???zend_object_write_property_t ???????????write_property;//修改成员属性 ???...}//默认值处理handlerZEND_API zend_object_handlers std_object_handlers = { ???0, ???zend_object_std_dtor, ??????????????????/* free_obj */ ???zend_objects_destroy_object, ???????????/* dtor_obj */ ???zend_objects_clone_obj, ????????????????/* clone_obj */ ???zend_std_read_property, ????????????????/* read_property */ ???zend_std_write_property, ???????????????/* write_property */ ???zend_std_read_dimension, ???????????????/* read_dimension */ ???zend_std_write_dimension, ??????????????/* write_dimension */ ???zend_std_get_property_ptr_ptr, ?????????/* get_property_ptr_ptr */ ???NULL, ??????????????????????????????????/* get */ ???NULL, ??????????????????????????????????/* set */ ???zend_std_has_property, ?????????????????/* has_property */ ???zend_std_unset_property, ???????????????/* unset_property */ ???zend_std_has_dimension, ????????????????/* has_dimension */ ???zend_std_unset_dimension, ??????????????/* unset_dimension */ ???zend_std_get_properties, ???????????????/* get_properties */ ???zend_std_get_method, ???????????????????/* get_method */ ???NULL, ??????????????????????????????????/* call_method */ ???zend_std_get_constructor, ??????????????/* get_constructor */ ???zend_std_object_get_class_name, ????????/* get_class_name */ ???zend_std_compare_objects, ??????????????/* compare_objects */ ???zend_std_cast_object_tostring, ?????????/* cast_object */ ???NULL, ??????????????????????????????????/* count_elements */ ???zend_std_get_debug_info, ???????????????/* get_debug_info */ ???zend_std_get_closure, ??????????????????/* get_closure */ ???zend_std_get_gc, ???????????????????????/* get_gc */ ???NULL, ??????????????????????????????????/* do_operation */ ???NULL, ??????????????????????????????????/* compare */}