php生成二维码按目录打包下载

有这样一个需求，某个书籍有书籍总码、目录码和章节码，想要将二维码按对应的目录打包下载，如何实现呢？

打包下载之前，首先先观看php生成彩色二维码这篇文章，这里重点将如何打包

1.新建打包类

<?php
namespace App\Http\Controllers\Api;
use App\Http\Controllers\Controller;
class ZipfileController
{
    var $datasec = array();
    var $ctrl_dir = array();
    var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
    var $old_offset = 0;
 
    function unix2_dostime($unixtime = 0)
    {
        $timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);
        if ($timearray ['year'] < 1980) {
            $timearray ['year'] = 1980;
            $timearray ['mon'] = 1;
            $timearray ['mday'] = 1;
            $timearray ['hours'] = 0;
            $timearray ['minutes'] = 0;
            $timearray ['seconds'] = 0;
        }
        return (($timearray ['year'] - 1980) << 25) | 
                 ($timearray ['mon'] << 21) | 
                 ($timearray ['mday'] << 16) | 
                 ($timearray ['hours'] << 11) | 
                 ($timearray ['minutes'] << 5) | 
                 ($timearray ['seconds'] >> 1);
    }
 
    function add_file($data, $name, $time = 0)
    {
        $name = str_replace('\\', '/', $name);
 
        $dtime = dechex($this->unix2_dostime($time));
        $hexdtime = '\x' . $dtime [6] . $dtime [7] . '\x' . 
               $dtime [4] . $dtime [5] . '\x' . $dtime [2] . 
               $dtime [3] . '\x' . $dtime [0] . $dtime [1];
        eval('$hexdtime = "' . $hexdtime . '";');
 
        $fr = "\x50\x4b\x03\x04";
        $fr .= "\x14\x00";
        $fr .= "\x00\x00";
        $fr .= "\x08\x00";
        $fr .= $hexdtime;
 
        $unc_len = strlen($data);
        $crc = crc32($data);
        $zdata = gzcompress($data);
        $zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2);
        $c_len = strlen($zdata);
        $fr .= pack('V', $crc);
        $fr .= pack('V', $c_len);
        $fr .= pack('V', $unc_len);
        $fr .= pack('v', strlen($name));
        $fr .= pack('v', 0);
        $fr .= $name;
 
        $fr .= $zdata;
        $fr .= pack('V', $crc);
        $fr .= pack('V', $c_len);
        $fr .= pack('V', $unc_len);
 
        $this->datasec [] = $fr;
 
        $cdrec = "\x50\x4b\x01\x02";
        $cdrec .= "\x00\x00";
        $cdrec .= "\x14\x00";
        $cdrec .= "\x00\x00";
        $cdrec .= "\x08\x00";
        $cdrec .= $hexdtime;
        $cdrec .= pack('V', $crc);
        $cdrec .= pack('V', $c_len);
        $cdrec .= pack('V', $unc_len);
        $cdrec .= pack('v', strlen($name));
        $cdrec .= pack('v', 0);
        $cdrec .= pack('v', 0);
        $cdrec .= pack('v', 0);
        $cdrec .= pack('v', 0);
        $cdrec .= pack('V', 32);
 
        $cdrec .= pack('V', $this->old_offset);
        $this->old_offset += strlen($fr);
 
        $cdrec .= $name;
 
        $this->ctrl_dir[] = $cdrec;
    }
 
    function add_path($path, $l = 0)
    {
        $d = @opendir($path);
        $l = $l > 0 ? $l : strlen($path) + 1;
        while ($v = @readdir($d)) {
            if ($v == '.' || $v == '..') {
                continue;
            }
            $v = $path . '/' . $v;
            if (is_dir($v)) {
                $this->add_path($v, $l);
            } else {
                $this->add_file(file_get_contents("compress.zlib://".$v), substr($v, $l));
            }
        }
    }
 
    function file()
    {
        $data = implode('', $this->datasec);
        $ctrldir = implode('', $this->ctrl_dir);
        return $data . $ctrldir . $this->eof_ctrl_dir . 
                pack('v', sizeof($this->ctrl_dir)) . 
                pack('v', sizeof($this->ctrl_dir)) . 
                pack('V', strlen($ctrldir)) . 
                pack('V', strlen($data)) . "\x00\x00";
    }
 
    function add_files($files)
    {
        foreach ($files as $file) {
            if (is_file($file)) {
                $data = implode("", file($file));
                $this->add_file($data, $file);
            }
        }
    }
 
    function output($file)
    {
        $fp = fopen($file, "w");
        fwrite($fp, $this->file());
        fclose($fp);
    }
}

2.调用

 //将要下载的图片数组
            // $image[] = array(
            //     'image_src' => "http://www.xxx.com/testtest/getthisqrcode?size=300&data=https://www.rongdeji.cn/demandcont?id=4869&color=rgb(0,%200,%200)&margin=0&ecc=H&bgcolor=rgb(255,%20255,%20255)&logopath=/storage/logobook/1/38a09d1cb95a463f0fa197836f01670.png&logosize=80", 
            //     'image_name' => "dasd/1xsda.png"
            // );
            //下面是实例操作过程：
            $dfile = tempnam('/tmp', 'tmp');//产生一个临时文件，用于缓存下载文件
            $zip = new ZipfileController();
            //----------------------
            $filename = $name.'.zip'; //下载的默认文件名
            // echo("<pre>");
            //  var_dump($image);exit;
            //以下是需要下载的图片数组信息，将需要下载的图片信息转化为类似即可
            foreach ($image as $v) {
                // echo("<pre>");
                $v['image_src']=$url = str_replace(" ", "", $v['image_src']);
                // var_dump($v['image_src']);exit;
                
                $zip->add_file(file_get_contents("compress.zlib://".$v['image_src']), $v['image_name']);
                // 添加打包的图片，第一个参数是图片内容，第二个参数是压缩包里面的显示的名称, 
                 //   可包含路径
                // 或是想打包整个目录 用 $zip->add_path($image_path);
            }
            //----------------------
            $zip->output($dfile);
             
            // 下载文件
            ob_clean();
            header('Pragma: public');
            header('Last-Modified:' . gmdate('D, d M Y H:i:s') . 'GMT');
            header('Cache-Control:no-store, no-cache, must-revalidate');
            header('Cache-Control:pre-check=0, post-check=0, max-age=0');
            header('Content-Transfer-Encoding:binary');
            header('Content-Encoding:none');
            header('Content-type:multipart/form-data');
            //设置下载的默认文件名
            header('Content-Disposition:attachment; filename="' . $filename . '"'); 
            header('Content-length:' . filesize($dfile));
            $fp = fopen($dfile, 'r');
            while (connection_status() == 0 && $buf = @fread($fp, 8192)) {
                echo $buf;
            }
            fclose($fp);
            @unlink($dfile);
            @flush();
            @ob_flush();
            exit();

打包下载后解压

完成！！！