wanyue_app/app/common/Qrcode.php

<?php

namespace app\common;

use Endroid\QrCode\Color\Color;
use Endroid\QrCode\Encoding\Encoding;
use Endroid\QrCode\ErrorCorrectionLevel\ErrorCorrectionLevelLow;
use Endroid\QrCode\Label\Label;
use Endroid\QrCode\Logo\Logo;
use Endroid\QrCode\QrCode as QrCodeQrCode;
use Endroid\QrCode\RoundBlockSizeMode\RoundBlockSizeModeMargin;
use Endroid\QrCode\Writer\PngWriter;

class Qrcode{
    private $logo = null;
    private $label = null;
    private $size = 400;
    
    public function __construct() 
    {
        // 
    }
    
    /**
     * 设置二维码LOGO
     */
    public function setLogo($logo_path)
    {
        $this->logo = Logo::create($logo_path)   //logo的照片路径
            ->setResizeToWidth(20);             //logo的大小
    }
    
    /**
     * 设置二维码下方文字
     */
    public function setLabel($text)
    {
        $this->label = Label::create($text)      //二维码下面的文字
            ->setTextColor(new Color(0, 0, 0)); //文字的颜色        
    }
    
    /**
     * 生成二维码
     * @param string $url [链接]
     * @return string  [type]  [返回图片path]
     */
    public function create(string $url,string $fileName)
    {
        $writer = new PngWriter();
        
        $qrCode = QrCodeQrCode::create($url)//跳转的url地址
            ->setEncoding(new Encoding('UTF-8'))    //设置编码格式
            ->setErrorCorrectionLevel(new ErrorCorrectionLevelLow())    //设置纠错级别为低
            ->setSize($this->size)      //大小
            ->setMargin(30)             //边距
            ->setRoundBlockSizeMode(new RoundBlockSizeModeMargin())     //设置圆轮大小边距
            ->setForegroundColor(new Color(0, 0, 0))        //前景色
            ->setBackgroundColor(new Color(255, 255, 255));       //背景色
        
        $result = $writer->write($qrCode, $this->logo, $this->label);
        
        $result->getString();
        
        $file_path = public_path() . "/storage/qrcode/";
        
        if (!is_dir($file_path)) {
            mkdir($file_path, 0755, true);
        }
        
        if (!empty($fileName)){
            $qrcode = $fileName.'.png';
        }else{
            $qrcode = time() . mt_rand(0, 9999). '.png';
        }
        
        $result->saveToFile($file_path . $qrcode);
        
        return $file_path . $qrcode;
    }
}