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  1. <?php
  2.  
  3. abstract class Form {
  4. 	abstract protected function do_shit();
  5.  
  6. 	public function f() {
  7. 		$this->do_shit();
  8. 	}
  9.  
  10. 	public static function build($type) : Form {
  11. 		return new $type();
  12. 	}
  13. }
  14.  
  15. class FormA extends Form {
  16. 	protected function do_shit() : void {
  17. 		echo "A";
  18. 	}
  19. }
  20. class FormB extends Form {
  21. 	protected function do_shit() : void {
  22. 		echo "B";
  23. 	}
  24. }
  25.  
  26. class FormC extends Form {
  27. 	protected function do_shit() : void {
  28. 		echo "C";
  29. 	}
  30. }
  31. class FormD extends Form {
  32. 	protected function do_shit() : void {
  33. 		echo "D";
  34. 	}
  35. }
  36. class FormE extends Form {
  37. 	protected function do_shit() : void {
  38. 		echo "E";
  39. 	}
  40. }
  41.  
  42.  
  43. $f = Form::build('FormC');
  44. $f->f();
  45.  
  46.  
  47.  
Success #stdin #stdout 0.02s 24280KB
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C
https://ideone.com/am9iuJ
language:
PHP (php 7.3.5)
created:
3 years ago
visibility:
public

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