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Example analysis PHP extends class inheritance_PHP tutorial

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2016-07-15 13:33:59867browse

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。


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