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In this tutorial we will create a Simple PDO CRUD using PHP. PHP is a server-side scripting language designed primarily for web development. PDO stands for PHP Data Objects. It is a lean and consistent way to access databases. This means developers can write portable code much easier. It is mostly used by a newly coders for its user friendly environment. So Let's do the coding.

Before we started:

First you have to download & install XAMPP or any local server that run PHP scripts. Here's the link for XAMPP server https://www.apachefriends.org/index.html.

Creating Database

This is where we store all the data we process throug HTML forms. To create a database open any kind of database base server that you have(wamp, xamp, etc..). Then create database and name it 'db_member'. After that click SQL then copy/paste the code below then click GO.

  1. CREATE TABLE `member` (
  2.   `mem_id` int(11) NOT NULL AUTO_INCREMENT,
  3.   `firstname` varchar(50) NOT NULL,
  4.   `lastname` varchar(50) NOT NULL,
  5.   `address` varchar(50) NOT NULL
  6.    PRIMARY KEY (`mem_id`)
  7. ) ENGINE=InnoDB DEFAULT CHARSET=latin1;

Creating the database Connection

This is the where the database connection, just simple copy/paste the provided code below and save it as 'connection.php'.

  1. <?php
  2. 	$db_username = 'root';
  3. 	$db_password = '';
  4. 	$conn = new PDO( 'mysql:host=localhost;dbname=db_member', $db_username, $db_password );
  5. 	if(!$conn){
  6. 		die("Fatal Error: Connection Failed!");
  7. 	}
  8. ?>
Creating The Mark UpThis is where we will create a simple form for our application. To create the forms simply copy and write it into you text editor, then save it as shown below. index.php

  1. <!DOCTYPE html>
  2. <html lang="en">
  3. 	<head>
  4. 		<link rel="stylesheet" type="text/css" href="css/bootstrap.css">
  5. 		<meta charset="UTF-8" name="viewport" content="width=device-width, initial-scale=1"/>
  6. 	</head>
  7. <body>
  8. 	<nav class="navbar navbar-default">
  9. 		<div class="container-fluid">
  10. 			<a href="https://sourcecodester.com" class="navbar-brand">Sourcecodester</a>
  11. 		</div>
  12. 	</nav>
  13. 	<div class="col-md-3"></div>
  14. 	<div class="col-md-6 well">
  15. 		<h3 class="text-primary">PHP - PDO CRUD</h3>
  16. 		<hr style="border-top:1px dotted #ccc;" />
  17. 		<div class="col-md-3"></div>
  18. 		<div class="col-md-6">
  19. 			<form method="POST" action="add.php">
  20. 				<div class="form-group">
  21. 					<label>Firstname</label>
  22. 					<input class="form-control" type="text" name="firstname"/>
  23. 				</div>
  24. 				<div class="form-group">
  25. 					<label>Lastname</label>
  26. 					<input class="form-control" type="text" name="lastname"/>
  27. 				</div>
  28. 				<div class="form-group">
  29. 					<label>Address</label> 
  30. 					<input class="form-control" type="text" name="address"/>
  31. 				</div>
  32. 				<div class="form-group">
  33. 					<button class="btn btn-primary form-control" type="submit" name="save">Save</button>
  34. 				</div>
  35. 			</form>
  36. 		</div>
  37. 		<table class="table table-bordered">
  38. 			<thead class="alert-danger">
  39. 				<tr>
  40. 					<th>Firstname</th>
  41. 					<th>Lastname</th>
  42. 					<th>Address</th>
  43. 					<th>Action</th>
  44. 				</tr>
  45. 			</thead>
  46. 			<tbody class="alert-warning">
  47. 				<?php
  48. 					require 'connection.php';
  49. 					$sql = $conn->prepare("SELECT * FROM `member` ORDER BY `mem_id` DESC");
  50. 					$sql->execute();
  51. 					while($row = $sql->fetch()){
  52. 				?>
  53. 				<tr>
  54. 					<td><?php echo $row['firstname']?></td>
  55. 					<td><?php echo $row['lastname']?></td>
  56. 					<td><?php echo $row['address']?></td>
  57. 					<td><a href="edit.php?id=<?php echo $row['mem_id']?>">Edit</a> | <a href="delete.php?id=<?php echo $row['mem_id']?>">Delete</a></td>
  58. 				</tr>
  59. 				<?php
  60. 					}
  61. 				?>
  62. 			</tbody>
  63. 		</table>
  64. 	</div>
  65.  
  66. </body>
  67.  
  68. </html>

edit.php

  1. <!DOCTYPE html>
  2. <html lang="en">
  3. 	<head>
  4. 		<link rel="stylesheet" type="text/css" href="css/bootstrap.css">
  5. 		<meta charset="UTF-8" name="viewport" content="width=device-width, initial-scale=1"/>
  6. 	</head>
  7. <body>
  8. 	<nav class="navbar navbar-default">
  9. 		<div class="container-fluid">
  10. 			<a href="https://sourcecodester.com" class="navbar-brand">Sourcecodester</a>
  11. 		</div>
  12. 	</nav>
  13. 	<div class="col-md-3"></div>
  14. 	<div class="col-md-6 well">
  15. 		<h3 class="text-primary">PHP - PDO CRUD</h3>
  16. 		<hr style="border-top:1px dotted #ccc;" />
  17. 		<div class="col-md-3"></div>
  18. 		<div class="col-md-6">
  19. 			<?php
  20. 				if(ISSET($_GET['id'])){
  21. 					require_once 'connection.php';
  22. 					$id = $_GET['id'];
  23. 					$sql = $conn->prepare("SELECT * FROM `member` WHERE `mem_id`='$id'");
  24. 					$sql->execute();
  25. 					$row = $sql->fetch();
  26. 				}
  27. 			?>
  28. 			<form method="POST" action="update.php?id=<?php echo $id?>">
  29. 				<div class="form-group">
  30. 					<label>Firstname</label>
  31. 					<input class="form-control" type="text" value="<?php echo $row['firstname']?>" name="firstname"/>
  32. 				</div>
  33. 				<div class="form-group">
  34. 					<label>Lastname</label>
  35. 					<input class="form-control" type="text" value="<?php echo $row['lastname']?>" name="lastname"/>
  36. 				</div>
  37. 				<div class="form-group">
  38. 					<label>Address</label> 
  39. 					<input class="form-control" type="text" value="<?php echo $row['address']?>" name="address"/>
  40. 				</div>
  41. 				<div class="form-group">
  42. 					<button class="btn btn-warning form-control" type="submit" name="update">Update</button>
  43. 				</div>
  44. 			</form>
  45. 			<?php
  46. 				$conn = null;
  47. 			?>
  48. 		</div>
  49. 	</div>
  50.  
  51. </body>
  52.  
  53. </html>
Adding Function

We will now create the add function, this function will store the value into the database. To do that just copy/paste the code below then name it add.php.

  1. <?php
  2. 	require_once 'connection.php';
  3.  
  4. 	if(ISSET($_POST['save'])){
  5. 		try{
  6. 			$firstname = $_POST['firstname'];
  7. 			$lastname = $_POST['lastname'];
  8. 			$address = $_POST['address'];
  9. 			$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
  10. 			$sql = "INSERT INTO `member` (`firstname`, `lastname`, `address`) VALUES ('$firstname', '$lastname', '$address')";
  11. 			$conn->exec($sql);
  12. 		}catch(PDOException $e){
  13. 			echo $e->getMessage();
  14. 		}
  15.  
  16. 		$conn = null;
  17. 		header('location:index.php');
  18. 	}
  19. ?>

Delete Function

We will now create the delete function, this will delete the targeted value base on the mem_id key. To do that just copy/paste the code below then name it delete.php.

  1. <?php
  2. 	if(ISSET($_GET['id'])){
  3. 		require_once 'connection.php';
  4. 		$id = $_GET['id'];
  5. 		$sql = $conn->prepare("DELETE from `member` WHERE `mem_id`='$id'");
  6. 		$sql->execute();
  7. 		header('location:index.php');
  8. 	}
  9. ?>

Update Function

We will now create the update function, this code will stored all the value within the form and update the data into the database base on the mem_id. To do that just copy/paste the code below then name it update.php.

  1. <?php
  2. 	require_once 'connection.php';
  3.  
  4. 	if(ISSET($_POST['update'])){
  5. 		try{
  6. 			$id = $_GET['id'];
  7. 			$firstname = $_POST['firstname'];
  8. 			$lastname = $_POST['lastname'];
  9. 			$address = $_POST['address'];
  10. 			$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
  11. 			$sql = "UPDATE `member`SET `firstname` = '$firstname', `lastname` = '$lastname', `address` = '$address' WHERE `mem_id` = '$id'";
  12. 			$conn->exec($sql);
  13. 		}catch(PDOException $e){
  14. 			echo $e->getMessage();
  15. 		}
  16.  
  17. 		$conn = null;
  18. 		header('location:index.php');
  19. 	}
  20. ?>

There you have it we create a Simple PDO CRUD. I hope that this simple tutorial help your to your on working projects. For more updates and tutorials just kindly visit this site, don't forget to LIKE and SHARE. Enjoy Coding!!

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