PHP生成二维码

>= PHP7.1

composer require endroid/qr-code:3.5.9

>= PHP7.2

composer require endroid/qr-code:3.9.3

Basic usage

use Endroid\QrCode\QrCode;

$qrCode = new QrCode('this is qrcode text');

// 直接输出
header('Content-Type: '.$qrCode->getContentType());
echo $qrCode->writeString();

// 保存图片
$qrCode->writeFile( __DIR__ . '/qrcode.png');

Advanced usage

use Endroid\QrCode\ErrorCorrectionLevel;
use Endroid\QrCode\LabelAlignment;
use Endroid\QrCode\QrCode;
use Endroid\QrCode\Response\QrCodeResponse;

// Create a basic QR code
$qrCode = new QrCode('Life is too short to be generating QR codes');
$qrCode->setSize(300);$qrCode->setMargin(10); 

// Set advanced options
$qrCode->setWriterByName('png');
$qrCode->setEncoding('UTF-8');
$qrCode->setErrorCorrectionLevel(ErrorCorrectionLevel::HIGH());
$qrCode->setForegroundColor(['r' => 0, 'g' => 0, 'b' => 0, 'a' => 0]);
$qrCode->setBackgroundColor(['r' => 255, 'g' => 255, 'b' => 255, 'a' => 0]);
$qrCode->setLabel('Scan the code', 16, __DIR__.'/../assets/fonts/noto_sans.otf', LabelAlignment::CENTER());
$qrCode->setLogoPath(__DIR__.'/../assets/images/symfony.png');
$qrCode->setLogoSize(150, 200);
$qrCode->setValidateResult(false);

// Round block sizes to improve readability and make the blocks sharper in pixel based outputs (like png).
// There are three approaches:
$qrCode->setRoundBlockSize(true, QrCode::ROUND_BLOCK_SIZE_MODE_MARGIN); // The size of the qr code is shrinked, if necessary, but the size of the final image remains unchanged due to additional margin being added (default)
$qrCode->setRoundBlockSize(true, QrCode::ROUND_BLOCK_SIZE_MODE_ENLARGE); // The size of the qr code and the final image is enlarged, if necessary
$qrCode->setRoundBlockSize(true, QrCode::ROUND_BLOCK_SIZE_MODE_SHRINK); // The size of the qr code and the final image is shrinked, if necessary

// Set additional writer options (SvgWriter example)
$qrCode->setWriterOptions(['exclude_xml_declaration' => true]);

// Directly output the QR code
header('Content-Type: '.$qrCode->getContentType());
echo $qrCode->writeString();

// Save it to a file
$qrCode->writeFile(__DIR__.'/qrcode.png');

// Generate a data URI to include image data inline (i.e. inside an <img> tag)
$dataUri = $qrCode->writeDataUri();

from: https://packagist.org/packages/endroid/qr-code