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  1. <?php
  2.  
  3. function calc($sum, $pct, $comm) {
  4. $paid = 0;
  5. $payment = 5000;
  6. while ($sum > 0) {
  7. $sum = ($sum * $pct) + $comm;
  8. $paid += $payment;
  9. $sum -= $payment;
  10. }
  11. return $paid + $sum;
  12. }
  13.  
  14. $iphone = 39999;
  15.  
  16. $homo = calc($iphone, 1.04, 500);
  17. $soft = calc($iphone, 1.03, 1000);
  18. $straw = calc($iphone+7777, 1.02, 0);
  19.  
  20. echo "$homo - $soft - $straw\r\n";
  21.  
  22.  
  23.  
Success #stdin #stdout 0.02s 24392KB
stdin
Standard input is empty
stdout
56423.563121625 - 61268.718210807 - 53559.8738592