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  1. <?php
  2. error_reporting(-1);
  3.  
  4. //нихуя не работает, что делать с этим пока не знаю.
  5. class Calc
  6. {
  7. 	public function createStack() {
  8. 		$newStack = new Stack;
  9. 		return $newStack;
  10. 	}
  11.  
  12. 	public function sum() {
  13. 		$augend = $this->pop();
  14. 		$addend = $this->pop();
  15. 		$this->push($augend+$addend);
  16.  
  17. 	}
  18. }
  19.  
  20. //Вроде всё норм работает, пуш добавляет элемент в стек, поп извлекает.
  21. class Stack
  22. {
  23. 	public $body = [];
  24.  
  25. 	public function push($a) {
  26. 		$this->body[] = $a;
  27. 	}
  28.  
  29. 	public function isEmpty() {
  30. 		return (count($this->body)==0);
  31. 	}
  32.  
  33. 	public function pop() {
  34. 		if (!$this->isEmpty()) {
  35. 			$poped = array_pop($this->body);
  36. 			return $poped;
  37. 		} else {
  38. 			return null;
  39. 		}
  40. 	}
  41.  
  42. }
  43.  
  44.  
  45.  
  46. //$test = new Stack;
  47. //$test->push(2);
  48. //$test->push(4);
  49. //var_dump($test);
  50.  
  51. $test1 = new Calc;
  52. $test1->createStack;
  53.  
  54.  
  55. var_dump($test1);
  56.  
  57.  
Success #stdin #stdout #stderr 0.01s 20520KB
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stdin
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Standard input is empty
stdout
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object(Calc)#1 (0) {
}
stderr
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PHP Notice:  Undefined property: Calc::$createStack in /home/LfzOnz/prog.php on line 52
https://ideone.com/Log5qh
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
secret

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