PHP的类自动加载实例

学生类Student

<?php

class Student
{
   public $name;
   public $age;
   public $sex;
   public function __construct($name,$age,$sex)
   {
       $this->name = $name;
       $this->age = $age;
       $this->sex = $sex;
   }
}

老师类Teacher

<?php

class Teacher
{
   public $name;
   public $age;
   public $sex;
   public function __construct($name,$age,$sex)
   {
       $this->name = $name;
       $this->age = $age;
       $this->sex = $sex;
   }
}

类的自动加载文件

<?php
//类的自动加载器:最重要的一个参数就是一个回调
spl_autoload_register(function($className){
  require __DIR__ . '\public\\' . $className . '.php';
});
$student = new Student('李明',12,'男');
$teacher = new Teacher('朱老师',30,'男');
echo '学生:' . $student->name . '的年龄是: ' . $student->age . ',性别是: ' . $student->sex . '<br>';
echo '老师:' . $teacher->name . '的年龄是: ' . $teacher->age . ',性别是: ' . $teacher->sex . '<br>';