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An example of understanding PHP object-oriented programming (OOP), object-oriented programming oop_PHP tutorial

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An example of understanding PHP object-oriented programming (OOP), object-oriented programming oop

<?<span>php<br /><br />
    </span><span>class</span><span> Person{<br /><br />        //声明一个新变量公共变量<strong>$name</strong>,可被任何包中的类访问<br />        </span><span>public</span> <span>$name</span><span>;
        </span><span>public</span> <span>$sex</span><span>;
        </span><span>public</span> <span>$age</span><span>;<br /><br />        //声明该类的一个方法
        </span><span>function</span><span> say() {
            </span><span>echo</span> "你好!<br />"<span>;
            </span><span>echo</span> "我的的名字是:" . <span>$this</span> -> name ."<br />"<span>;
            </span><span>echo</span> "我的性别是:" . <span>$this</span> -> sex ."<br />"<span>;
        }
    }
<br />    //声明新的Student类为Person的子类
    </span><span>class</span> Student <span>extends</span><span> Person{
        </span><span>public</span> <span>$school</span><span>;
        </span><span>function</span><span> study() {<br />            //parent:: 可用于调用父类中定义的成员方法。<br />            parent::say();</span><span>echo</span> "我的年龄是:" . <span>$this</span> -> age . "<br />我正在" . <span>$this</span> -> school . "上学。"<span>;
        }
    }
<br />  //只用将P1定义为学生类即可
    </span><span>$p1</span> = <span>new</span><span> Student();<br /><br />    //为P1的name,sex,age,school属性赋值
    </span><span>$p1</span> -> name = "张三"<span>;
    </span><span>$p1</span> -> sex = "男"<span>;
    </span><span>$p1</span> -> age = "18"<span>;
    </span><span>$p1</span> -> school = "某某学校"<span>;
    </span><span>$p1</span> -><span> study();
</span>?>

The browser output is as follows:

Hello!
My name is: Zhang San
My gender is: Male
My age is: 18
I am attending a certain school.

www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1033244.htmlTechArticleAn example of understanding PHP object-oriented programming (OOP), object-oriented programming oop? php class Person{ //Declaration A new variable public variable $name, accessible by any class in the package public $...
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