怎么新建MySQL数据库

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<?php

header("content-type:text/html;charset=utf-8");

class Preson{                                                //定义类

  public $name;

  public $age;

  public function __construct($Name,$Age)        //构造函数

  {

     $this -> name = $Name;

     $this -> age = $Age;

     echo '<pre>';

     var_dump($this);                  //打印出$this

  }

  public function showInfo(){             //成员方法

     echo "个人信息：";

     echo '<br/>' . "名字是：" . $this -> name . '<br/>' . "年龄是：" . $this -> age;

  }

}

$preson = new Preson("小草",25);           //实例化

var_dump($preson);                    //打印出$this

$preson -> showInfo();

echo '<hr>';

$preson = new Preson("大树",30);           //实例化

var_dump($preson);                   //打印出$preson

$preson -> showInfo();