<?php header("Content-Type:text/html;charset=UTF-8"); //面向对象的特点:继承、封装、多态 class Person{ public $userName; public $age; public function eat(){ echo '人都要吃饭!'; } } //继承:extends(php是单继承,只能继承一个) class Student extends Person{ } $XiaoMing = new Student(); $XiaoMing->eat(); //人都要吃饭! ?>
php学习:方法的继承
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