Live Examples - QR Code Generator v1.0.1

Interactive examples showing all QR code types with real-time generation. Copy the code examples to get started!

Basic QR Code Types

Essential QR codes for everyday use:

Communication QR Codes

QR codes for phone calls, SMS, and contact information:

Network & Location QR Codes

QR codes for WiFi networks and geographical locations:

Usage Examples

Basic Generation

 
use QR_Code\Types\QR_Text;
use QR_Code\Types\QR_Url;
use QR_Code\Types\QR_EmailMessage;
 
// Simple text QR code
$textQR = new QR_Text('Hello, World!');
$pngData = $textQR->png();  // Returns data URI
 
// URL QR code with custom size
$urlQR = new QR_Url('https://example.com');
$urlQR->setSize(6);  // Larger QR code
$largePng = $urlQR->png();
 
// Email QR code
$emailQR = new QR_EmailMessage(
    '[email protected]',    // Email address
    'Hello from QR code!',    // Message body
    'QR Code Test'            // Subject
);
$emailPng = $emailQR->png();

Advanced Configuration

 
use QR_Code\Types\QR_WiFi;
use QR_Code\Types\QR_VCard;
 
// WiFi QR code with all parameters
$wifi = new QR_WiFi(
    'NetworkName',     // SSID
    'password123',     // Password
    'WPA'             // Security type (WEP/WPA/WPA2)
);
 
// Customize appearance
$wifi->setSize(8)              // Large size
     ->setMargin(2)            // Smaller margin
     ->setErrorCorrectionLevel('H'); // High error correction
 
$wifiPng = $wifi->png();
 
// vCard with full contact information
use QR_Code\Types\vCard\Person;
use QR_Code\Types\vCard\Phone;
 
$person = new Person(
    'John',           // First name
    'Doe',           // Last name
    'Mr.',           // Title
    '[email protected]', // Email
    'Example Corp',  // Organization
    'Software Engineer' // Job title
);
 
$phone = new Phone('+1-555-123-4567');
$vcard = new QR_VCard($person, [$phone]);
 
$vcardPng = $vcard->png();

Color & Style Variations

Customize QR code appearance with colors, sizes, and error correction levels:

Large Colorful QR Code

Here's a large, vibrant QR code example:

Output Format Comparison

Performance Tips

• Cache QR codes: Generate once, reuse the data URI
• Choose appropriate sizes: Size 3-6 works well for most screens
• Error correction: Use 'L' for clean environments, 'H' for damaged surfaces
• Batch generation: Create multiple QR codes efficiently in loops

 
// Efficient batch processing
$urls = ['https://example.com', 'https://test.com', 'https://demo.com'];
$qrCodes = [];
 
foreach ($urls as $url) {
    $qr = new QR_Url($url);
    $qr->setSize(4)
       ->setErrorCorrectionLevel('M'); // Medium error correction
 
    $qrCodes[] = $qr->png();
}
 
// Cache the results for reuse
cache()->put('qr_codes_batch', $qrCodes, now()->addHour());

Error Handling

 
try {
    $qr = new QR_Text('Your text here');
    $qr->setSize(10)  // Large size
       ->setMargin(6) // Big margin
       ->setErrorCorrectionLevel('H'); // High correction
 
    $qrCode = $qr->png();
 
    // Verify the QR code was generated
    if (empty($qrCode)) {
        throw new \Exception('QR code generation failed');
    }
 
    echo $qrCode; // Output data URI
 
} catch (\Exception $e) {
    error_log('QR Code generation error: ' . $e->getMessage());
    // Fallback or error handling
}