【thinkphp5.1】endroid/qrcode二维码生成

composer require endroid/qrcode

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：