1126作业创建类、实例化、命名空间、类成员、类方法-PHP培训第九期线上班

1创建类、实例化、命名空间、类成员、类方法

<?php
    namespace danyue;
    class User{
        public $uid = 1;
        public $name = 'danyue';
        public $age = 22;
        public function index()
        {
            return "UID:".$this -> uid."<br>". "姓名：".$this -> name."<br>"."年龄:".$this -> age."<br>";
        }
    }
    $user = new User();
    echo $user ->name;
    echo '<hr>';
    echo $user -> index();

构造方法

<?php
class User
{
    public $uid;
    public $name;
    public $age;
    public function index()
    {
        return "UID:" . $this->uid . "<br>" . "姓名：" . $this->name . "<br>" . "年龄:" . $this->age . "<br>";
    }
    public function __construct($uid, $name, $age)
    {
        $this->uid = $uid;
        $this->name = $name;
        $this->age = $age;
    }
}
$user = new User('2', 'Dony', '28');
echo $user->name;
echo '<hr>';
echo $user->index();