php类错误，它不会回应老师

Question

这是我的代码而且这个类搞砸了，所以它不会回应

class Person  __construct($firstname,$lastname,$age)
{
    public $isAlive = true;
    $firstname->prop1 = $firstname;
    $lastname->prop2 = $lastname;
    $age->prop3 = $age;
 }
 $teacher = new Person("boring", "12345", 12345);
 $student = new Person("boringw", "12345w", 12345);
 echo $teacher;

Answer 1

正如人们在评论中提到的，您的代码充满了各种错误。我相信你想要的是：

class Person {
   function __construct($firstname,$lastname,$age) {
       $this->isAlive   = true;
       $this->firstname = $firstname;
       $this->lastname  = $lastname;
       $this->age       = $age;
    }
}

$teacher = new Person("boring", "12345", 12345);
$student = new Person("boringw", "12345w", 12345);
print_r($teacher);

此代码已经过测试且有效。

结果：

人物对象（[isAlive] =＆gt; 1 [firstname] =＆gt;无聊[姓氏] =＆gt; 12345 [年龄] =＆gt; 12345）

注意：您不能echo一个对象。