Example analysis PHP extends class inheritance_PHP tutorial

WBOY
Release: 2016-07-15 13:33:59
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PHP extends类继承代码示例:

  1. < ?php  
  2. class a{  
  3. public $x;  
  4. public $y;  
  5. function __construct($x=0,$y=0){  
  6. $this->x=$x;  
  7. $this->y=$y;  
  8. }  
  9. function getx(){  
  10. return $this->x;  
  11. }  
  12. function gety(){  
  13. return $this->y;  
  14. }  
  15. function __destruct(){}  
  16. }  
  17. class a2 extends a{}   
    /*extends是一个继承函数*/  
  18. $b2=new a2(10,10);  
  19. echo $b2->getx()."<br>";  
  20. echo $b2->gety();  
  21. ?> 

以上介绍的内容就是PHP extends类继承的全部实现步骤。


www.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...
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