编辑代码

<?php
    class Person {
        public function __construct($name, $gender, $age) {
            $this -> name = $name;
            $this -> gender = $gender;
            $this -> age = $age;
            $this -> say();
        }

        public function say() {
            echo "我的名字是:" .$this -> name. " 我的性别是:" .$this -> gender. " 我的年龄是:" .$this -> age. "<br>";
        }
    }

$p1 = new Person("张三", "男", 20);
$p2 = new Person("李四", "女", 19);
$p3 = new Person("王五", "男", 18);
?>