API Documentation

Overview Create QR Read QR Security Integration

API Documentation

Overview Create QR Read QR Security Integration

Integration Examples

Below are practical examples for integrating the QR Code Generator API into different platforms and programming languages.

JavaScript (Fetch API)

Generate a QR code from a web application:

// Generate QR code
fetch('/api/qr/create.php', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    data: 'Hello World',
    size: 300,
    format: 'png'
  })
})
.then(response => response.json())
.then(data => {
  if (data.qr_code_url) {
    // Use the URL to display the QR code
    document.getElementById('qr-image').src = data.qr_code_url;
  }
})
.catch(error => {
  console.error('Error:', error);
});

cURL

Command-line examples for testing and automation:

# Generate QR code
curl -X POST "https://rcor.hu/api/qr/create.php" \
  -H "Content-Type: application/json" \
  -d '{"data":"Hello World","size":300,"format":"png"}'

# Read QR code
curl -X POST "https://rcor.hu/api/qr/read.php" \
  -F "image=@qr_code.png"

PHP

Server-side integration example:

// Generate QR code
$data = [
    'data' => 'Hello World',
    'size' => 300,
    'format' => 'png'
];

$ch = curl_init('https://example.com/api/qr/create.php');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/json']);

$response = curl_exec($ch);
$result = json_decode($response, true);
curl_close($ch);

if (isset($result['qr_code_url'])) {
    echo "QR Code URL: " . $result['qr_code_url'];
}

Note: For production use, install PHP QR code libraries via Composer: composer require endroid/qr-code for generation and composer require khanamiryan/qrcode-detector-decoder for decoding.