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  1. <?php
  2. abstract class B {
  3.     public function do() {
  4.         $this->hello();
  5.     }
  6.     abstract public function hello();
  7. }
  8.  
  9.  
  10. class C extends B {
  11.     public function hello() {
  12.         echo "Hello world!";
  13.     }
  14. }
  15.  
  16. $B = new C();
  17. echo $B->do();
  18.  
  19. //https://pt.stackoverflow.com/q/461925/101
Success #stdin #stdout 0.02s 24440KB
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Standard input is empty
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Hello world!
https://ideone.com/nhqQvR
language:
PHP (php 7.3.5)
created:
3 years ago
visibility:
public

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