How to Install and Use the Endroid QR Code Extension in PHP

The article begins by listing the development environment: Windows 10 x64, PHPStudy as the integrated PHP environment, and Composer as the dependency manager.

It then instructs to install the QR‑code extension using Composer with the command: composer require endroid/qr-code Two PHP service methods are presented. The first method make_qrcode creates a plain QR code image, handling directory creation, file naming, and optional domain prefix, and returns the image path.

<?php
namespace app\common\service;

use Jrk\Random;
use Endroid\QrCode\QrCode;
use think\Exception;

class QrcodeSrvice {
    public static function make_qrcode($text, $size = 105, $domain = false) {
        $img_name = Random::alnum(15);
        $n = date("Ym");
        $dir = app()->getRootPath() . "public/qrcode/code/" . $n;
        if (!is_dir($dir)) {
            mkdir($dir, 0777, true);
        }
        $pathname = $dir . "/" . $img_name . '.png';
        $qrCode = new QrCode();
        $qrCode->setText($text)
            ->setSize($size)
            ->setPadding(15)
            ->setErrorCorrection('high')
            ->setForegroundColor(['r'=>0,'g'=>0,'b'=>0,'a'=>0])
            ->setBackgroundColor(['r'=>255,'g'=>255,'b'=>255,'a'=>0])
            ->setImageType(QrCode::IMAGE_TYPE_PNG);
        try {
            $qrCode->save($pathname);
            $str = "/qrcode/code/" . $n . "/" . $img_name . '.png';
            if ($domain) {
                return request()->domain() . $str;
            } else {
                return $str;
            }
        } catch (\Endroid\QrCode\Exceptions\ImageTypeInvalidException $exception) {
            return "";
        }
    }
}

The second method QrCodeWithLogo generates a QR code with a logo, performing similar steps but also checking the logo file, setting logo size, and returning the appropriate path.

<?php
// ... (same namespace and use statements as above)
class QrcodeSrvice {
    // ... previous method omitted for brevity
    public static function QrCodeWithLogo($text, $logo, $domain = false) {
        if (!file_exists($logo)) {
            exception("logo地址不存在");
        }
        $img_name = Random::alnum(15);
        $n = date("Ym");
        $dir = app()->getRootPath() . "public/qrcode/" . $n;
        if (!is_dir($dir)) {
            mkdir($dir, 0777, true);
        }
        $pathname = $dir . "/" . $img_name . '.png';
        $qrCode = new QrCode();
        $qrCode->setText($text)
            ->setSize(300)
            ->setLogo($logo)
            ->setLogoSize(60)
            ->setErrorCorrection('high')
            ->setForegroundColor(['r'=>0,'g'=>0,'b'=>0,'a'=>0])
            ->setBackgroundColor(['r'=>255,'g'=>255,'b'=>255,'a'=>0])
            ->setImageType(QrCode::IMAGE_TYPE_PNG);
        $qrCode->save($pathname);
        $str = "/qrcode/" . $n . "/" . $img_name . '.png';
        if ($domain) {
            return request()->domain() . $str;
        } else {
            return $str;
        }
    }
}

Overall, the guide provides a ready‑to‑use solution for generating QR codes in PHP projects, covering installation, configuration, and code examples for both plain and logo‑enhanced QR codes.