php extends类继承代码示例:
?php class a{ public $x; public $y; function __construct($x=0,$y=0){ $this->x=$x; $this->y=$y; } function getx(){ return $this->x; } function gety(){ return $this->y; } function __destruct(){} } class a2 extends a{}
/*extends是一个继承函数*/ $b2=new a2(10,10); echo $b2->getx().br>; echo $b2->gety(); ?> 以上介绍的内容就是php extends类继承的全部实现步骤。
http://www.bkjia.com/phpjc/446027.htmlwww.bkjia.comtruehttp://www.bkjia.com/phpjc/446027.htmltecharticlephp extends类继承代码示例: ?php classa{ public$x; public$y; function__construct($ x = 0 ,$ y = 0 ){ $this- x =$x; $this- y =$y; } functiongetx(){ return$this- x; } functio...