PHP Code for Update Data in MySQL Database

PHP Code for Update Data in MySQL Database

Fetch and update the data from the MySQL database in PHP. This example demonstrates to you how you can easily get or fetch and update the data from the database using MySQL queries in PHP.

Update Data in MySQL DB Using PHP Code

PHP code to retrieve and update data from MySQL database

Just follow the below two steps and fetch and update data from MySQL database in PHP:

  • Connect to MySQL database
  • Fetch data from the database
  • Update data from database

1. Connect to MySQL database

In this step, you will create a file name db.php and update the below code into your file.

The below code is used to create a MySQL database connection in PHP. When we fetch, insert, update or delete data from MySQL database, there we will include this file:

<?php
	$host='localhost';
	$username='root';
	$password='';
	$dbname = "my_db";
	$conn=mysqli_connect($host,$username,$password,"$dbname");
	if(!$conn)
        {
          die('Could not Connect MySql Server:' .mysql_error());
        }
?>

2. Fetch data from the database

In this step, we will fetch the data from the MySQL database in PHP and display data in an HTML table. So you can create a new file and update the below code into your file.

The below code is used to retrieve or receive data from the MySQL database in PHP. Additionally, we will display the fetched data in an HTML table.

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<title>PHP code to retrieve and update data from MySQL database</title>
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto|Varela+Round|Open+Sans">
<link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
    <style type="text/css">
        .bs-example{
            margin: 20px;
        }
    </style>
    <script type="text/javascript">
        $(document).ready(function(){
            $('[data-toggle="tooltip"]').tooltip();   
        });
    </script>
</head>
<body>
    <div class="bs-example">
        <div class="container">
            <div class="row">
                <div class="col-md-12">
                    <div class="page-header clearfix">
                        <h2 class="pull-left">Users List</h2>
                    </div>
                    <?php
                    include_once 'db.php';
                    $result = mysqli_query($conn,"SELECT * FROM users");
                    ?>

                    <?php
                    if (mysqli_num_rows($result) > 0) {
                    ?>
                      <table class='table table-bordered table-striped'>
                      
                      <tr>
                        <td>Name</td>
                        <td>Email id</td>
                        <td>Mobile</td>
                        <td>Action</td>
                      </tr>
                    <?php
                    $i=0;
                    while($row = mysqli_fetch_array($result)) {
                    ?>
                    <tr>
                        <td><?php echo $row["name"]; ?></td>
                        <td><?php echo $row["email"]; ?></td>
                        <td><?php echo $row["mobile"]; ?></td>
                        <td><a href="update-action.php?userid=<?php echo $row["id"]; ?>">Update</a></td>
                    </tr>
                    <?php
                    $i++;
                    }
                    ?>
                    </table>
                     <?php
                    }
                    else{
                        echo "No result found";
                    }
                    ?>
                </div>
            </div>        
        </div>
    </div>
</body>
</html>

3. Update data from database

In this step, we will update the data from the MySQL database using PHP . So you can create a new file and update the below code into your file.

The below code is used to update data from the MySQL database in PHP.

<?php
// Include database connection file
require_once "connection.php";

    if(count($_POST)>0) {
    mysqli_query($conn,"UPDATE users set  name='" . $_POST['name'] . "', mobile='" . $_POST['mobile'] . "' ,email='" . $_POST['email'] . "' WHERE id='" . $_POST['id'] . "'");
    $message = "Record Modified Successfully";
    }
    $result = mysqli_query($conn,"SELECT * FROM users WHERE id='" . $_GET['userid'] . "'");
    $row= mysqli_fetch_array($result);
  
?>
 
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Update Record</title>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.css">
    <style type="text/css">
        .wrapper{
            width: 500px;
            margin: 0 auto;
        }
    </style>
</head>
<body>
    <div class="wrapper">
        <div class="container-fluid">
            <div class="row">
                <div class="col-md-12">
                    <div class="page-header">
                        <h2>Update Record</h2>
                    </div>
                    <p>Please edit the input values and submit to update the record.</p>
                    <form action="<?php echo htmlspecialchars(basename($_SERVER['REQUEST_URI'])); ?>" method="post">
                        <div class="form-group">
                            <label>Name</label>
                            <input type="text" name="name" class="form-control" value="<?php echo $row["name"]; ?>">
                            
                        </div>
                        <div class="form-group ">
                            <label>Email</label>
                            <input type="email" name="email" class="form-control" value="<?php echo $row["email"]; ?>">
                        </div>
                        <div class="form-group">
                            <label>Mobile</label>
                            <input type="mobile" name="mobile" class="form-control" value="<?php echo $row["mobile"]; ?>">
                        </div>
                        <input type="hidden" name="id" value="<?php echo $row["id"]; ?>"/>
                        <input type="submit" class="btn btn-primary" value="Submit">
                        <a href="users.php" class="btn btn-default">Cancel</a>
                    </form>
                </div>
            </div>        
        </div>
    </div>
</body>
</html>

Conclusion

To fetch and update the data from the MySQL database in PHP. Here you have learned how to fetch and update data in MySQL table using PHP code.

This is a very basic and easy example of fetching and updating the data into a MySQL database using a PHP script. In the next tutorial, we will show you how you can delete records from MySQL database using PHP code.

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