Dependent Select Option With MySQLi Using jQuery/PHP

Submitted by razormist on Monday, January 9, 2017 - 23:31.

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The Dependent select option was build using jQuery / PHP. This simple source code will show you how to create a dependent select option driven by MySQLi database server. The select option is automatically generate whenever the user choose from the first selection. It retrieve the data within the database to display the result based on the selected value. This is the sample code 
  1. <!DOCTYPE html>
  2. <?php
  3. $conn = new mysqli('localhost', 'root', '', 'db_animal') or die(mysqli_error());	
  4. ?>
  5. <html lang = "eng">
  6. <head>
  7. 	<meta charset = "UTF-8" />
  8. 	<link rel = "stylesheet" type = "text/css" href = "css/bootstrap.css" />
  9. </head>
  10. <body>
  11. 	<nav class = "navbar navbar-default">
  12. 		<div class = "container-fluid">
  13. 			<a class  = "navbar-brand" href = "https://www.sourcecodester.com">Sourcecodester</a>
  14. 		</div>
  15. 	</nav>
  16. 	<div class = "container-fluid">	
  17. 		<div class = "row">
  18. 			<div class = "col-md-3"></div>
  19. 			<div class = "col-md-6 well">
  20. 				<h4 class = "text-primary">Dependent Select Option With MySQLi Using PHP / jQuery</h4>
  21. 				<hr style = "border-top: 1px dotted #8c8b8b;"/>
  22. 				<form class = "form-inline">
  23. 					<div class  =  "form-group">
  24. 						<label>Animal Group:</label>
  25. 						<select id = "group" class = "form-control" name = "animal-groupl" required = "required">
  26. 							<option value = "">Select a group</option>
  27. 							<?php
  28. 							$g_animal = $conn->prepare("SELECT * FROM `animal` GROUP BY `animal_group`");
  29. 							if($g_animal->execute()){
  30. 							$g_result = $g_animal->get_result();
  31. 						}
  32. 						while($f_ganimal = $g_result->fetch_array()){
  33. 						?>
  34. 						<option value = "<?php echo $f_ganimal['animal_group']?>"><?php echo $f_ganimal['animal_group']?></option>
  35. 						<?php
  36. 					}
  37. 					$conn->close();	
  38. 					?>
  39. 				</select>
  40. 			</div>	
  41. 			<div class = "form-group">
  42. 				<label>Animal:</label>
  43. 				<select  id = "animal" name = "animal"  class = "form-control" disabled = "disabled" required = "required">
  44. 					<option value = "">Select an animal</option>
  45. 				</select>
  46. 			</div>
  47. 		</form>
  48. 	</div>
  49. </div>
  50. </div>	
  51. </body>
  52. <script src = "js/jquery-3.1.1.js"></script>
  53. <script type = "text/javascript">
  54. 	$(document).ready(function(){
  55. 		$('#group').on('change', function(){
  56. 			if($('#group').val() == ""){
  57. 				$('#animal').empty();
  58. 				$('<option value = "">Select an animal</option>').appendTo('#animal');
  59. 				$('#animal').attr('disabled', 'disabled');
  60. 			}else{
  61. 				$('#animal').removeAttr('disabled', 'disabled');
  62. 				$('#animal').load('animal_get.php?animal_group=' + $('#group').val());
  63. 			}
  64. 		});
  65. 	});
  66. </script>
  67. </html>
I hope the source code can help you to your projects and future projects. For more update and tutorial, just kindly visit this site. Enjoy coding!!

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