PHP生成二维码方法及常用库推荐

composer require endroid/qr-code

require_once 'vendor/autoload.php';

use Endroid\QrCode\QrCode;
use Endroid\QrCode\Writer\PngWriter;

$writer = new PngWriter();

// 创建二维码对象
$qrCode = QrCode::create('https://www.example.com')
    ->setSize(300)
    ->setMargin(10);

// 写入并输出
$result = $writer->write($qrCode);
$result->saveToFile('qrcode.png');
echo '<img src="qrcode.png" alt="QR Code" />';

use Endroid\QrCode\Color\Color;
use Endroid\QrCode\Encoding\Encoding;
use Endroid\QrCode\ErrorCorrectionLevel\ErrorCorrectionLevelLow;
use Endroid\QrCode\RoundBlockSizeMode\RoundBlockSizeModeMargin;
use Endroid\QrCode\Label\Label;

$qrCode = QrCode::create('Hello World')
    ->setSize(400)
    ->setMargin(15)
    ->setEncoding(new Encoding('UTF-8'))
    ->setErrorCorrectionLevel(new ErrorCorrectionLevelLow())
    ->setForegroundColor(new Color(0, 0, 0))
    ->setBackgroundColor(new Color(255, 255, 255))
    ->setRoundBlockSizeMode(new RoundBlockSizeModeMargin());

$label = Label::create('扫描关注我们')
    ->setTextColor(new Color(0, 0, 0));

$result = $writer->write($qrCode, $label);
$result->saveToFile('qrcode_with_label.png');

header('Content-Type: '.$result->getMimeType());
echo $result->getString();

use Endroid\QrCode\Logo\Logo;

$logo = Logo::create('logo.png')
    ->setResizeToWidth(80);

$result = $writer->write($qrCode, null, $logo);
$result->saveToFile('qrcode_with_logo.png');