php5 oop--类的包含include

class_A.php:

 

<?php
class    A
{
        // 属性(成员)声明
        public $aa = 'A缺省值';
        public $bb=array("苹果","葡萄","香蕉");

        // 方法声明
        public function echo_aa() {
                echo $this->aa;//not $this->$aa
        }
}
?>

 

 

class_B.php:

 

<?php
class    B
{
        // 属性(成员)声明
        public $aa = 'B缺省值';
        public $bb=array("苹果","葡萄","香蕉");

        // 方法声明
        public function echo_aa() {
                echo $this->aa;//not $this->$aa
        }
}
?>

 

 

oop7.php:

 

<?php
include "class_A.php";
include "class_B.php";

$a=new A;
$a->echo_aa();

$b=new B;
$b->echo_aa();
?>

 

大家通常是喜欢一个类一个文件,使用时include进来，但是如果多了就会出现一堆include.

 

php里的__autoload()就是为了解决这种问题的：

<?php
function __autoload($class_name) {
        require_once "class_".$class_name . '.php';
}

$a=new A;
$a->echo_aa();

$b=new B;
$b->echo_aa();
?>