使用php 生成二维码，主要是可以自定义样式。一般情况下，建议使用前端qrcode.min.js生成即可。
<?php
/** @Description: 二维码* @ComposerRequire: composer require endroid/qr-code* @ComposerRemove: composer require endroid/qr-code* @Author: 阿海 <764882431@qq.com>* @Date: 2020-11-10 15:19:53* @LastEditTime: 2020-12-29 10:29:52* @LastEditors: 阿海*/
namespace app\common\library;use Endroid\QrCode\ErrorCorrectionLevel;
use Endroid\QrCode\LabelAlignment;
use Endroid\QrCode\QrCode;class PHPQrcode
{
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titleprotected $_title_content = ''; // title内容protected $_generate = 'display'; // display-直接显示 writefile-写入文件 download-下载 base64-编码文件protected $_file_save_path = 'runtime/uploads/qrcode/'; // 写入文件路径protected $_foreground_color = ['r' => 0, 'g' => 0, 'b' => 0, 'a' => 0]; // 前景色protected $_background_color = ['r' => 255, 'g' => 255, 'b' => 255, 'a' => 0]; // 背景色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protected $_content = ""; //二维码内容//const FOREGROUND_COLOR = ['r' => 0, 'g' => 0, 'b' => 0, 'a' => 0]; // 前景色//const BACKGROUND_COLOR = ['r' => 255, 'g' => 255, 'b' => 255, 'a' => 0]; // 背景色public function __construct($config){
$this->_generate = isset($config['generate']) ? $config['generate']:$this->_generate;$this->_encoding = isset($config['encoding']) ? $config['encoding']:$this->_encoding;$this->_size = isset($config['size']) ? $config['size']:$this->_size;$this->_logo = isset($config['logo']) ? $config['logo']:$this->_logo;$this->_logo_url = isset($config['logo_url']) ? $config['logo_url']:$this->_logo_url;$this->_logo_size = isset($config['logo_size']) ? $config['logo_size']:$this->_logo_size;$this->_title = isset($config['title']) ? $config['title']: $this->_title;$this->_title_content = isset($config['title_content']) ? $config['title_content']: $this->_title_content;$this->_file_save_path = isset($config['file_save_path']) ? $config['file_save_path']:$this->_file_save_path;$this->_foreground_color = isset($config['foreground_color']) ? $config['foreground_color']:$this->_foreground_color;$this->_background_color = isset($config['background_color']) ? $config['background_color']: $this->_background_color;$this->_content = isset($config['content']) ? $config['content']: $this->_content;}/*** 生成二维码* @return array | page input* @throws \Endroid\QrCode\Exception\InvalidPathException* @throws \Endroid\QrCode\Exception\InvalidWriterException*/public function createServer(){
if ($this->_generate == 'display') {
return $this->display();} else if ($this->_generate == 'download') {
return $this->download(); } else if ($this->_generate == 'base64') {
return $this->toBase64();} else if ($this->_generate == 'writefile') {
} else {
app("api_result")->echoJson(-3,['msg'=>'the generate type not found,display or base64 or writefile or download support for optional parameter']);}}/*** 保存图片* @param string $content 二维码内容* @param string $path 保存的路径* @return 图片路径*/public function save($content = '',$path =''){
if(!empty($content)){
$this->_content = $content;}if(!empty($path)){
$this->_file_save_path = $path;}$this->_qr = $this->createQrcode();return $this->generateImg();}/*** @param string $content 二维码内容* 返回base64的图片数据*/public function base64($content = ''){
if(!empty($content)){
$this->_content = $content;}$this->_qr = $this->createQrcode();return $this->_qr->writeDataUri();}/*** 下载二维码,会在服务器中保存一份* @param string $content 二维码内容* @param string $path 保存的路径--这里的下载是先把图片生成在服务器，然后再下载下来*/public function download($content='',$path='runtime/uploads/qrcode/download/'){
if(!empty($path)){
$this->_file_save_path = $path;}if(!empty($content)){
$this->_content = $content;}$this->_qr = $this->createQrcode();$result = $this->generateImg();if ($result['code'] == 0) {
header('Content-Disposition:attachment;filename=' . basename($result['data']['path']));header('Content-Length:' . filesize($result['data']['path']));readfile($result['data']['path']);app("api_result")->echoJson(0,['msg'=>'download qrimg success']);} else {
app("api_result")->echoJson(-3,['msg'=>$result['errorMsg']]);}}/*** @param string $content 二维码的内容* 线上直接显示--链接就是图片* 前端调用 例：<img src="http://localhost/qr.php?url=base64_url_string">*/public function display($content = ''){
if(!empty($content)){
$this->_content = $content;}$this->createQrcode();header('Content-Type: ' . $this->_qr->getContentType());return $this->_qr->writeString();}/*** 初始化数据*/private function createQrcode(){
if(empty($this->_content)){
app("api_result")->echoJson(-3,['msg'=>'do not set the qrcode content']);}$this->_qr = new QrCode($this->_content);$this->_qr->setSize($this->_size);$this->_qr->setWriterByName(self::WRITE_NAME);$this->_qr->setMargin(self::MARGIN);$this->_qr->setEncoding($this->_encoding);$this->_qr->setErrorCorrectionLevel(ErrorCorrectionLevel::HIGH()); // 容错率//$this->_qr->setForegroundColor(self::FOREGROUND_COLOR);$this->_qr->setForegroundColor($this->_foreground_color);//$this->_qr->setBackgroundColor(self::BACKGROUND_COLOR);$this->_qr->setBackgroundColor($this->_background_color);// 是否需要titleif ($this->_title) {
$this->_qr->setLabel($this->_title_content, 16, null, LabelAlignment::CENTER);}// 是否需要logoif ($this->_logo) {
$this->_qr->setLogoPath($this->_logo_url);$this->_qr->setLogoWidth($this->_logo_size);}$this->_qr->setValidateResult(false);return $this->_qr;}/*** 生成文件 返回图片路径* @return array*/private function generateImg(){
$path = env('root_path').$this->_file_save_path;$file_save_path = $path . uniqid() . '.' . self::WRITE_NAME;if (!file_exists($path)) {
mkdir($path, 0777, true);}try {
$this->_qr->writeFile($file_save_path);$data = ['path' => $file_save_path ,'url'=>substr($file_save_path,strlen(env('root_path'))),'ext' => self::WRITE_NAME,];return app("api_result")->returnArray(0,['msg'=>'write qrimg success','data'=>$data]);} catch (\Exception $e) {
return app("api_result")->echoJson(-3,['msg'=>$e->getMessage()]);}}
}