PHP code example of crazy-goat / scanmephp

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

crazy-goat / scanmephp example snippets

use CrazyGoat\ScanMePHP\QRCode;

$qr = new QRCode('https://example.com');
echo $qr->render();

use CrazyGoat\ScanMePHP\QRCode;
use CrazyGoat\ScanMePHP\QRCodeConfig;
use CrazyGoat\ScanMePHP\Renderer\FullBlocksRenderer;

$config = new QRCodeConfig(
    engine: new FullBlocksRenderer(sideMargin: 4),
    label: 'ScanMePHP',
);
$qr = new QRCode('https://example.com', $config);
echo $qr->render();

use CrazyGoat\ScanMePHP\Renderer\HalfBlocksRenderer;

$config = new QRCodeConfig(
    engine: new HalfBlocksRenderer(sideMargin: 4),
);

use CrazyGoat\ScanMePHP\Renderer\SimpleRenderer;

$config = new QRCodeConfig(
    engine: new SimpleRenderer(sideMargin: 4),
);

use CrazyGoat\ScanMePHP\Renderer\SvgRenderer;
use CrazyGoat\ScanMePHP\ModuleStyle;

$config = new QRCodeConfig(
    engine: new SvgRenderer(moduleSize: 12),
    moduleStyle: ModuleStyle::Rounded, // Square, Rounded, or Dot
    label: 'Scan Me!',
);
$qr = new QRCode('https://example.com', $config);
$qr->saveToFile('qrcode.svg');

use CrazyGoat\ScanMePHP\Renderer\PngRenderer;

$config = new QRCodeConfig(
    engine: new PngRenderer(moduleSize: 10),
);
$qr = new QRCode('https://example.com', $config);
$qr->saveToFile('qrcode.png');

// Or use as data URI (e.g. in <img> tags)
$dataUri = $qr->getDataUri(); // data:image/png;base64,...

use CrazyGoat\ScanMePHP\Renderer\HtmlDivRenderer;

$config = new QRCodeConfig(
    engine: new HtmlDivRenderer(moduleSize: 10, fullHtml: false),
    label: 'ScanMePHP',
);
$qr = new QRCode('https://example.com', $config);

// Fragment only (for embedding)
$html = $qr->render();

// Full HTML page
$config = new QRCodeConfig(
    engine: new HtmlDivRenderer(fullHtml: true),
);

use CrazyGoat\ScanMePHP\Renderer\HtmlTableRenderer;

$config = new QRCodeConfig(
    engine: new HtmlTableRenderer(moduleSize: 8, fullHtml: true),
);

use CrazyGoat\ScanMePHP\QRCodeConfig;
use CrazyGoat\ScanMePHP\ErrorCorrectionLevel;
use CrazyGoat\ScanMePHP\ModuleStyle;
use CrazyGoat\ScanMePHP\Renderer\SvgRenderer;

$config = new QRCodeConfig(
    engine: new SvgRenderer(),                          // renderer instance
    errorCorrectionLevel: ErrorCorrectionLevel::Medium,  // Low, Medium, Quartile, High
    label: 'My QR Code',                                // optional label below QR
    size: 0,                                             // QR version 1-40, 0 = auto
    margin: 4,                                           // quiet zone in modules
    foregroundColor: '#000000',
    backgroundColor: '#FFFFFF',
    moduleStyle: ModuleStyle::Square,                    // Square, Rounded, Dot (SVG only)
    invert: false,                                       // swap foreground/background
);

$config = new QRCodeConfig(
    engine: new FullBlocksRenderer(sideMargin: 4),
    invert: true,
    label: 'Dark Mode',
);

$config = new QRCodeConfig(
    engine: new SvgRenderer(),
    invert: true,
    foregroundColor: '#FFFFFF',
    backgroundColor: '#000000',
);

$qr = new QRCode('https://example.com', $config);

$qr->render();              // returns string
$qr->saveToFile('qr.svg');  // writes to file
$qr->getDataUri();          // data:image/svg+xml;base64,...
$qr->toBase64();            // raw base64
$qr->toHttpResponse();      // sends Content-Type header, outputs, exits
$qr->getMatrix();           // raw Matrix object
$qr->validate();            // true if data fits in QR version
echo $qr;                   // __toString() calls render()

use CrazyGoat\ScanMePHP\RendererInterface;
use CrazyGoat\ScanMePHP\Matrix;
use CrazyGoat\ScanMePHP\RenderOptions;

class MyCustomRenderer implements RendererInterface
{
    public function render(Matrix $matrix, RenderOptions $options): string
    {
        $size = $matrix->getSize();
        for ($y = 0; $y < $size; $y++) {
            for ($x = 0; $x < $size; $x++) {
                $isDark = $matrix->get($x, $y);
                // ... your rendering logic
            }
        }
        return $output;
    }

    public function getContentType(): string
    {
        return 'text/plain';
    }
}

use CrazyGoat\ScanMePHP\FfiEncoder;

$encoder = new FfiEncoder(__DIR__ . '/libscanme_qr.so');
$qr = new QRCode('https://example.com', encoder: $encoder);

bash
   cp php-ext-linux-glibc-x86_64.so $(php-config --extension-dir)/
   

bash
php bench/benchmark_encoder.php        # 200 iterations
php bench/benchmark_encoder.php 500    # 500 iterations
php -d extension=php-ext/modules/scanmeqr.so bench/benchmark_all.php 500   # incl. the extension

bash
php examples/ascii_fullblocks.php
php examples/svg_example.php
php examples/png_example.php
php examples/html_div.php
php examples/html_table.php