PHP面向对象程序设计OOP继承用法入门示例

本文实例讲述了PHP面向对象程序设计OOP继承用法。分享给大家供大家参考，具体如下：

    <?php
    class Person {
      var $name;//protected
      var $sex;
      var $age;
      function __construct($name = "", $sex = "男", $age = 22) {
        $this->name = $name;
        $this->sex = $sex;
        $this->age = $age;
      }
      function say() {
        echo $this->name . "在说话<br/>";
      }
      function run() {
        echo "在走路・<br/>";
      }
    }
    class Student extends Person {
      var $school;
      function __construct($name = "", $sex = "男", $age = 22,$school="") {
        parent::__construct($name,$sex,$age);
        $this->school = $school;
      }
      function study() {
        echo $this->name."正在".$this->school."学习<br/>";
      }
    }
    class Teacher extends Student {
      var $wage;
      function teaching() {
        echo $this->name."正在".$this->school."教学，每月工资为".$this->wage."<br/>";
      }
    }
    $teacher1 = new Teacher("kaifu","男",22);
    $teacher1->school = "edu";
    $teacher1->wage = 4000;
    $teacher1->say();
    $teacher1->study();
    $teacher1->teaching();
    ?>

结果：

    kaifu在说话
    kaifu正在edu学习
    kaifu正在edu教学，每月工资为4000

更多关于PHP相关内容感兴趣的读者可查看本站专题：《php面向对象程序设计入门教程》、《PHP基本语法入门教程》、《PHP运算与运算符用法总结》、《PHP网络编程技巧总结》、《PHP数组(Array)操作技巧大全》、《php字符串(string)用法总结》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》

希望本文所述对大家PHP程序设计有所帮助。