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With the rise of contactless services, QR code-based ordering has become standard in the restaurant industry. By scanning a QR code, users can instantly access the menu and place orders, improving service efficiency while reducing labor costs. This guide explains how to implement QR code functionality in a PHP-powered ordering system.
Before users can scan a QR code, you need to generate it. The QR code typically contains a URL that leads to the ordering interface. You can use third-party libraries like phpqrcode to generate QR codes in PHP.
composer require khanamiryan/qrcode-detector-decoder
After installing, include the library in your PHP code and generate the QR code:
require 'vendor/autoload.php';
// QR code content, usually a system URL
$qrData = "https://example.com";
$qrName = "qrcode.png"; // QR code image name
QRcode::png($qrData, $qrName);
Once the QR code is generated, users can scan it using a tool or device. The system then reads the QR content. In PHP, you can use the Zxing library to decode the QR code.
composer require zxing/zebra-crossing
Then include and use it in your script:
require 'vendor/autoload.php';
// Read the QR code
$qrcodePath = "qrcode.png"; // Path to the QR image
$qrcode = new QrReader($qrcodePath);
$qrData = $qrcode->text(); // Extract content from the QR code
After scanning, users are usually redirected to the menu page with parameters such as table number. These can be handled easily in PHP using GET requests.
// Redirect with table number as URL parameter
$redirectUrl = "https://example.com/menu.php?table=1";
header("Location: $redirectUrl");
exit();
On the menu page, retrieve the parameter like this:
$table = $_GET['table']; // Get the table number
Based on the table number, the system can load the appropriate menu and store the user's order information in a database or other storage.
By combining QR code generation and decoding with PHP's URL handling, you can effectively implement a QR code ordering feature. This method improves the dining experience and streamlines the ordering process. Depending on your project needs, you may also add features such as QR code expiration, improved scan accuracy, and more.
