• php打包图片后进行批量下载


      1 <?php
      2 
      3 
      4 class Imagedown {
      5     var $datasec      = array ();
      6     var $ctrl_dir     = array ();
      7     var $eof_ctrl_dir = "x50x4bx05x06x00x00x00x00";
      8     var $old_offset   = 0;
      9     public function unix2_dostime($unixtime = 0){
     10         $timearray = ($unixtime == 0) ? getdate () : getdate($unixtime);
     11         if ($timearray ['year'] < 1980){
     12             $timearray ['year'] = 1980;
     13             $timearray ['mon'] = 1;
     14             $timearray ['mday'] = 1;
     15             $timearray ['hours'] = 0;
     16             $timearray ['minutes'] = 0;
     17             $timearray ['seconds'] = 0;
     18         }
     19         return (($timearray ['year'] - 1980) << 25) | ($timearray ['mon'] << 21) | ($timearray ['mday'] << 16) | ($timearray ['hours'] << 11) | ($timearray ['minutes'] << 5) | ($timearray ['seconds'] >> 1);
     20     }
     21     public function add_file($data, $name, $time = 0){
     22         $name = str_replace('\', '/', $name);
     23         $dtime = dechex($this->unix2_dostime($time));
     24         $hexdtime = 'x' . $dtime [6] . $dtime [7] . 'x' . $dtime [4] . $dtime [5] . 'x' . $dtime [2] . $dtime [3] . 'x' . $dtime [0] . $dtime [1];
     25         eval('$hexdtime = "' . $hexdtime . '";');
     26         $fr = "x50x4bx03x04";
     27         $fr .= "x14x00";
     28         $fr .= "x00x00";
     29         $fr .= "x08x00";
     30         $fr .= $hexdtime;
     31         $unc_len = strlen($data);
     32         $crc = crc32($data);
     33         $zdata = gzcompress($data);
     34         $zdata = substr(substr($zdata, 0, strlen($zdata)- 4), 2);
     35         $c_len = strlen($zdata);
     36         $fr .= pack('V', $crc);
     37         $fr .= pack('V', $c_len);
     38         $fr .= pack('V', $unc_len);
     39         $fr .= pack('v', strlen($name));
     40         $fr .= pack('v', 0);
     41         $fr .= $name;
     42         $fr .= $zdata;
     43         $fr .= pack('V', $crc);
     44         $fr .= pack('V', $c_len);
     45         $fr .= pack('V', $unc_len);
     46         $this->datasec [] = $fr;
     47         $cdrec = "x50x4bx01x02";
     48         $cdrec .= "x00x00";
     49         $cdrec .= "x14x00";
     50         $cdrec .= "x00x00";
     51         $cdrec .= "x08x00";
     52         $cdrec .= $hexdtime;
     53         $cdrec .= pack('V', $crc);
     54         $cdrec .= pack('V', $c_len);
     55         $cdrec .= pack('V', $unc_len);
     56         $cdrec .= pack('v', strlen($name));
     57         $cdrec .= pack('v', 0);
     58         $cdrec .= pack('v', 0);
     59         $cdrec .= pack('v', 0);
     60         $cdrec .= pack('v', 0);
     61         $cdrec .= pack('V', 32);
     62         $cdrec .= pack('V', $this->old_offset);
     63         $this->old_offset += strlen($fr);
     64         $cdrec .= $name;
     65         $this->ctrl_dir[] = $cdrec;
     66     }
     67     public function add_path($path, $l = 0){
     68         $d = @opendir($path);
     69         $l = $l > 0 ? $l : strlen($path) + 1;
     70         while($v = @readdir($d)){
     71             if($v == '.' || $v == '..'){
     72                 continue;
     73             }
     74             $v = $path . '/' . $v;
     75             if(is_dir($v)){
     76                 $this->add_path($v, $l);
     77             } else {
     78                 $this->add_file(file_get_contents($v), substr($v, $l));
     79             }
     80         }
     81     }
     82     public function file(){
     83         $data = implode('', $this->datasec);
     84         $ctrldir = implode('', $this->ctrl_dir);
     85         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($data)) . "x00x00";
     86     }
     87     public function add_files($files){
     88         foreach($files as $file){
     89             if (is_file($file)){
     90                 $data = implode("", file($file));
     91                 $this->add_file($data, $file);
     92             }
     93         }
     94     }
     95     public function output($file){
     96         $fp = fopen($file, "w");
     97         fwrite($fp, $this->file ());
     98         fclose($fp);
     99     }
    100 }
    View Code

    以上是类文件  文件外进行调用

     1   public function dowmload_img()
     2     {
     3          $img_id=   $_GET["url"];
     4          print_r($img_id);exit();
     5         //打包下载实例操作过程
     6         $dfile = tempnam('/tmp', 'tmp');//产生一个临时文件,用于缓存下载文件
     7         require_once ROOT_PATH.'extend/PHPImagedown/Imagedown.php';
     8         $zip = new Imagedown();
     9         //能访问到的路径
    10         $image = array(
    11             'http://a.cn/upimages/20191128/2019112815749059887920.jpg',
    12             'http://a.cn/upimages/20191128/2019112815749059887920.jpg'
    13         );
    14 
    15         $filename = 'image.zip'; //下载的默认文件名
    16         foreach($image as $v){
    17             $zip->add_file(file_get_contents($v), basename($v));
    18             // 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
    19             // 或是想打包整个目录 用 $zip->add_path($image_path);
    20         }
    21 //----------------------
    22         $zip->output($dfile);
    23 // 下载文件
    24         ob_clean();
    25         header('Pragma: public');
    26         header('Last-Modified:'.gmdate('D, d M Y H:i:s') . 'GMT');
    27         header('Cache-Control:no-store, no-cache, must-revalidate');
    28         header('Cache-Control:pre-check=0, post-check=0, max-age=0');
    29         header('Content-Transfer-Encoding:binary');
    30         header('Content-Encoding:none');
    31         header('Content-type:multipart/form-data');
    32         header('Content-Disposition:attachment; filename="'.$filename.'"'); //设置下载的默认文件名
    33         header('Content-length:'. filesize($dfile));
    34         $fp = fopen($dfile, 'r');
    35         while(connection_status() == 0 && $buf = @fread($fp, 8192)){
    36             echo $buf;
    37         }
    38         fclose($fp);
    39         @unlink($dfile);
    40         @flush();
    41         @ob_flush();
    42         exit();
    43     }
    图片打包下载

    下载的文件名称用中文乱码

    解决办法:  在下方添加                       $name = iconv("UTF-8", "GBK", $name);

    public function add_file($data, $name, $time = 0){
    $name = str_replace('\', '/', $name);
    $name = iconv("UTF-8", "GBK", $name);
    $dtime = dechex($this->unix2_dostime($time));
    ---------------
    }
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  • 原文地址:https://www.cnblogs.com/njccqx/p/11947477.html
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