composer 链接： https://packagist.org/packages/endroid/qrcode
注意：PHP版本 要求 7.1+
1. 使用 composer 安装 endroid/qrcode：
composer require endroid/qrcode
2 将二维码生成封装为服务
位置： /appliction/common/services/QrcodeService.php
3 QrcodeServer.php 代码如下
<?php/** * 二维码服务 * 依然范儿特西 */namespace app\common\services;use Endroid\QrCode\ErrorCorrectionLevel;use Endroid\QrCode\LabelAlignment;use Endroid\QrCode\QrCode;class QrcodeServer{ ???protected $_qr; ???protected $_encoding ???????= ‘UTF-8‘; ?????????????// 编码类型 ???protected $_size ???????????= 300; ?????????????????// 二维码大小 ???protected $_logo ???????????= false; ???????????????// 是否需要带logo的二维码 ???protected $_logo_url ???????= ‘‘; ??????????????????// logo图片路径 ???protected $_logo_size ??????= 80; ??????????????????// logo大小 ???protected $_title ??????????= false; ???????????????// 是否需要二维码title ???protected $_title_content ??= ‘‘; ??????????????????// title内容 ???protected $_generate ???????= ‘display‘; ???????????// display-直接显示 ?writefile-写入文件 ???protected $_file_name ??????= ‘./‘; ????????????????// 写入文件路径 ???const MARGIN ??????????= 10; ???????????????????????// 二维码内容相对于整张图片的外边距 ???const WRITE_NAME ??????= ‘png‘; ????????????????????// 写入文件的后缀名 ???const FOREGROUND_COLOR = [‘r‘ => 0, ‘g‘ => 0, ‘b‘ => 0, ‘a‘ => 0]; ?????????// 前景色 ???const BACKGROUND_COLOR = [‘r‘ => 255, ‘g‘ => 255, ‘b‘ => 255, ‘a‘ => 0]; ???// 背景色 ???public function __construct($config) { ???????isset($config[‘generate‘]) ?????&& ?$this->_generate ???????= $config[‘generate‘]; ???????isset($config[‘encoding‘]) ?????&& ?$this->_encoding ???????= $config[‘encoding‘]; ???????isset($config[‘size‘]) ?????????&& ?$this->_size ???????????= $config[‘size‘]; ???????isset($config[‘logo‘]) ?????????&& ?$this->_logo ???????????= $config[‘logo‘]; ???????isset($config[‘logo_url‘]) ?????&& ?$this->_logo_url ???????= $config[‘logo_url‘]; ???????isset($config[‘logo_size‘]) ????&& ?$this->_logo_size ??????= $config[‘logo_size‘]; ???????isset($config[‘title‘]) ????????&& ?$this->_title ??????????= $config[‘title‘]; ???????isset($config[‘title_content‘]) && ?$this->_title_content ??= $config[‘title_content‘]; ???????isset($config[‘file_name‘]) ????&& ?$this->_file_name ??????= $config[‘file_name‘]; ???} ???/** ????* 生成二维码 ????* @param $content //需要写入的内容 ????* @return array | page input ????*/ ???public function createServer($content) { ???????$this->_qr = new QrCode($content); ???????$this->_qr->setSize($this->_size); ???????$this->_qr->setWriterByName(self::WRITE_NAME); ???????$this->_qr->setMargin(self::MARGIN); ???????$this->_qr->setEncoding($this->_encoding); ???????$this->_qr->setErrorCorrectionLevel(new ErrorCorrectionLevel(ErrorCorrectionLevel::HIGH)); ??// 容错率 ???????$this->_qr->setForegroundColor(self::FOREGROUND_COLOR); ???????$this->_qr->setBackgroundColor(self::BACKGROUND_COLOR); ???????// 是否需要title ???????if ($this->_title) { ???????????$this->_qr->setLabel($this->_title_content, 16, null, LabelAlignment::CENTER); ???????} ???????// 是否需要logo ???????if ($this->_logo) { ???????????$this->_qr->setLogoPath($this->_logo_url); ???????????$this->_qr->setLogoWidth($this->_logo_size); ???????} ???????$this->_qr->setValidateResult(false); ???????if ($this->_generate == ‘display‘) { ???????????// 展示二维码 ???????????// 前端调用 例：<img src="http://localhost/qr.php?url=base64_url_string"> ???????????header(‘Content-Type: ‘ . $this->_qr->getContentType()); ???????????return $this->_qr->writeString(); ???????} else if ($this->_generate == ‘writefile‘) { ???????????// 写入文件 ???????????$file_name = $this->_file_name; ???????????return $this->generateImg($file_name); ???????} else { ???????????return [‘success‘ => false, ‘message‘ => ‘the generate type not found‘, ‘data‘ => ‘‘]; ???????} ???} ???/** ????* 生成文件 ????* @param $file_name //目录文件 例: /tmp ????* @return array ????*/ ???public function generateImg($file_name) { ???????$file_path = $file_name . DIRECTORY_SEPARATOR . uniqid() . ‘.‘ . self::WRITE_NAME; ???????if (!file_exists($file_name)) { ???????????mkdir($file_name, 0777, true); ???????} ???????try { ???????????$this->_qr->writeFile($file_path); ???????????$data = [ ???????????????‘url‘ => $file_path, ???????????????‘ext‘ => self::WRITE_NAME, ???????????]; ???????????return [‘success‘ => true, ‘message‘ => ‘write qrimg success‘, ‘data‘ => $data]; ???????} catch (\Exception $e) { ???????????return [‘success‘ => false, ‘message‘ => $e->getMessage(), ‘data‘ => ‘‘]; ???????} ???}}4 调用
<?php/** * ?二维码 */namespace app\index\controller;use app\common\services\QrcodeServer;
class Qrcode{ ???/** ????* 直接输出二维码 + 生成二维码图片文件 ????*/ ???public function create(){ ???????// 自定义二维码配置 ???????$config = [ ???????????‘title‘ ????????=> true, ???????????‘title_content‘ => ‘嗨，老范‘, ???????????‘logo‘ ?????????=> true, ???????????‘logo_url‘ ?????=> ‘./logo.png‘, ???????????‘logo_size‘ ????=> 80, ???????]; ???????// 直接输出 ???????$qr_url = ‘http://www.baidu.com?id=‘ . rand(1000, 9999); ???????$qr_code = new QrcodeServer($config); ???????$qr_img = $qr_code->createServer($qr_url); ???????echo $qr_img; ???????// 写入文件 ???????$qr_url = ‘这是个测试二维码‘; ???????$file_name = ‘./static/qrcode‘; ?// 定义保存目录 ???????$config[‘file_name‘] = $file_name; ???????$config[‘generate‘] ?= ‘writefile‘; ???????$qr_code = new QrcodeServer($config); ???????$rs = $qr_code->createServer($qr_url); ???????print_r($rs); ???????exit; ???}}效果：
【thinkphp5.1】 endroid/qrcode 二维码生成
原文地址：https://www.cnblogs.com/richerdyoung/p/10444104.html