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• 前端之家
• PHP
• PHP面向接口编程 耦合设计模式 简单范例

<div class="codebody" id="code90279">
<?PHP
interface js{
function ys($a,$b);
}
class Af implements js{
function ys($a,$b){
return "加法运算......结果为:".($a+$b);
}
}
class Jf implements js{
function ys($a,$b){
return "减法运算......结果为:".($a-$b);
}
}
class AAf implements js{
function ys($a,$b){
return "乘法运算......结果为:".($a$b);
}
}
class JJf implements js{
function ys($a,$b){
return "除法运算......结果为:".($a/$b);
}
}
class Modf implements js{
function ys($a,$b){
return "取模运算......结果为:".($a % $b);
}
}
class China implements js{
public $varl=null;//这里直接：public $varl = new nothingx(); 会出错。
function __construct(){
$this->varl = new nothingx();
}
function ys($a,$b){
return $this->varl->say();
}
}
/也可以用继承的方式实现哟:
class China extends nothingx implements js{
function ys($a,$b){
return parent::say();
}
}
*/
class nothingx{
function say(){
return "我什么运算都不做...只是为了实现‘耦合设计模式'...我是出来打酱油的......";
}
}
class test{
private $one;
private $two;
public function __construct($x,$y){
$this->one=$x;
$this->two=$y;
echo "

面向对象程序设计——接口

---

Class test初始化：
属性\$one=".$this->one."　　属性\$two=".$this->two."

---

";
}
function display(js $a){
return "用PHP接口技术实现的运算——开始运算啦:

---

".$a->ys($this->one,$this->two)."

---

";
}
}
$t=new test(103,2);
$t1=new jf;
$t2=new China;
echo $t->display($t1);
echo $t->display($t2);
?>