在天外天学习php的第一次作业

作业1

作业1结果截图

twthomework1.PNG

作业2

 $value) {
                echo $value." ";
            }
            echo "\n";
            self::$currentNumber++;
        }
        else
        {
            echo "cannot create this people.\n";
        }
    }
    public function speak(string $method){
        echo $method."\n";
    }
    public function eat(){
        $this->speak(__METHOD__);
        $weight++;
    }
    public function haveBirthday(){
        $this->speak(__METHOD__);
        $age++;
    }
    public function sleep(){
        $this->speak(__METHOD__);
        $height++;
    }
    public function walk(){
        $this->speak(__METHOD__);
        $weight--;
    }
    public function swim(){
        $this->speak(__METHOD__);
        $weight--;
    }
    public function run(){
        $this->speak(__METHOD__);
        $weight--;
    }
    public function __destruct(){
        echo "a people has been killed\n";
        $currentNumber--;
    }
}

eat();
$person->haveBirthday();
$person->sleep();
$person->walk();
$person->swim();
$person->run();

作业2结果截图

twthomeowrk2.PNG