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Jan 15th, 2020
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  1.  
  2. <?php
  3.  
  4. if(isset($_POST['submit'])) {
  5. $total = 0;
  6.  
  7. if($_POST['operasi'] == "*" || $_POST['oprasi'] == "/") {
  8. $total = 1;
  9. }
  10.  
  11. $total_field_diisi = 0;
  12. $operasi = $_POST['operasi'];
  13. foreach($_POST['input'] as $input) {
  14. if(isset($input['check'])) {
  15. if($operasi == "+") {
  16. $total += $input['number'];
  17. } else if($operasi == "-") {
  18. $total -= $input['number'];
  19. } else if($operasi == "/") {
  20. $total /= $input['number'];
  21. } else if($operasi == "*") {
  22. $total *= $input['number'];
  23. } else {
  24. $total = false;
  25. break;
  26. }
  27. $total_field_diisi ++;
  28. }
  29. }
  30.  
  31. if($total_field_diisi <= 1) {
  32. $total = false;
  33. }
  34.  
  35.  
  36.  
  37. }
  38.  
  39. ?>
  40.  
  41.  
  42. <form action="" method="post">
  43. <div class="form-group">
  44. <input type="number" name="input[0][number]" placeholder="Number 1" id=""> <input type="checkbox" name="input[0][check]" id="">
  45. <input type="number" name="input[1][number]" placeholder="Number 2" id=""> <input type="checkbox" name="input[1][check]" id="">
  46. <input type="number" name="input[2][number]" placeholder="Number 3" id=""> <input type="checkbox" name="input[2][check]" id="">
  47. <input type="text" name="operasi" id="" placeholder="operasi (+,-,/,*)">
  48. <br>
  49. <?php
  50.  
  51. if(isset($total)) {
  52. if(!$total) {
  53. echo "Error";
  54. } else {
  55. echo "Total: " . $total . "<br/>";
  56. }
  57. }
  58.  
  59. ?>
  60. <button type="submit" name="submit">Kirim</button>
  61. </div>
  62. </form>
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