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  1. <?php
  2. class CreditCalculator {
  3. 	private $credit;
  4. 	private $servicePayment;
  5. 	private $percent;
  6. 	private $monthlyPayment;
  7. 	private $totalPayment = 0;
  8. 	private $totalMonths = 0;
  9. 	public function __construct(array $data) 
  10. 	{
  11. 		foreach ($data as $k => $v) 
  12. 		{
  13. 				$this->{$k} = $v;	
  14. 		}
  15. 	} 
  16. 	public function getValue($value) 
  17. 	{
  18. 			return isset($this->$value) ? $this->$value : 'No such element here';
  19. 	}
  20. 	private function updateDebt()
  21. 	{
  22. 		$this->credit *= 1 + $this->percent / 100;
  23. 		$this->credit += $this->servicePayment;
  24. 	}
  25. 	private function payOnDebt() 
  26. 	{
  27. 		if ($this->credit >= $this->monthlyPayment) {
  28. 			$this->credit -= $this->monthlyPayment;
  29. 		    $this->totalPayment += $this->monthlyPayment;
  30. 		} else {
  31. 			$this->totalPayment += $this->credit;
  32. 			$this->credit -= $this->credit;
  33. 		}
  34. 	}
  35. 	private function calculateMonth() 
  36. 	{
  37. 		$this->updateDebt();
  38. 		$this->payOnDebt();
  39. 	}
  40. 	public function calculateTotal() 
  41. 	{
  42.  
  43. 		while ($this->credit > 0) {
  44. 			if ($this->totalMonths > 1000) {
  45. 				break;
  46. 			}
  47. 			$this->calculateMonth();
  48. 			$this->totalMonths++;
  49. 		}
  50. 	}
  51. 	public function render()
  52. 	{
  53. 		return $this->totalMonths < 1000 ? 'Ваш кредит будет выплачен через  ' . $this->getValue('totalMonths') . " месяцев. \n
  54. 		Вы переплатите: " . round($this->getValue('totalPayment'), 2) : 'К сожалению вы никогда не выплатите Ваш кредит';
  55. 	}
  56. }
  57. $calculator = new CreditCalculator(['credit' => 40000,
  58.                                    'servicePayment' => 1000,
  59.                                    'percent' => 3,
  60.                                     'monthlyPayment' => 5000]);
  61. $calculator->calculateTotal();
  62. echo $calculator->render();
Success #stdin #stdout 0.02s 52432KB
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Standard input is empty
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Ваш кредит будет выплачен через  13 месяцев. 

		Вы переплатите: 61270.19
https://ideone.com/7xnlWQ
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
public

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