PHP Magic Method Setter and Getter

标签：optional   function   magic   att   start   ble   cte   without   AMM   

 30)
                {
                    $current =$this->$property;
                    //notice: $this->property(without $) will create a new attribute called property, $property
                    $this->$property= $value;
                    echo "You are going to update $property from $current to $value"."
";
                }else{
                    echo "Update $property failed!
";
                }
            }
            public function __get($property)
            {
                return "You are trying to get inaccessible $property 's value: " . $this->$property . "
";
            }

        }
        $kid= new kids;  //() is optional, automatically call __constructor(){}
        //1. testing protected variable
                $kid->height =55; //this will implicitly and automatically call __set() because height property is protected
                                //You are going to update height from 23 to 55
                $kid->height =23; //Update height failed!
                echo $kid->height;   //You are trying to get inaccessible height 's value: 55
        //2. testing private variable
                $kid->age = 37;  //You are going to update age from to 37
                echo $kid->age;    //You are trying to get inaccessible age 's value: 37
        //3.testing undeclared variable in the class
                $kid->weight =40;
                /*You are going to update weight from You are trying to get inaccessible weight 's value:
                to 40  */ //why ?
                //because $current=$this->$property =$this->weight statement invoke the getter
               echo $kid->weight; //40

PHP Magic Method Setter and Getter

标签：optional   function   magic   att   start   ble   cte   without   AMM   

原文地址：https://www.cnblogs.com/luoxuw/p/12236725.html