php文件打包下载

php 图片打包下载

1.新建类

<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;

class ZipfileController extends Controller

{

  public $datasec = array ();

  public $ctrl_dir = array ();

  public $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";

  public $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){

  header('Content-type:text/html;charset=utf-8');

  // iconv('utf8','gbk2312',$str);

    $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 {

        $this->add_file(file_get_contents($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

$dfile = tempnam('/tmp', 'tmp');//产生一个临时文件，用于缓存下载文件
$zip = new ZipfileController();
$filename = $data[0]->hd_biaoti.'.zip'; //下载的默认文件名
$image = array(
 array('image_src' => $data[0]->hd_jif_erweim, 'image_name' => 'jifeng_xiaofei.jpg'),
 array('image_src' => $data[0]->hd_dianq_erweim, 'image_name' => 'dianquan_xiaofei.jpg'),
 array('image_src' => $this->functio->erweima_function('http://zmwx.trc-demo.com/huodong_baom/1/'.$data[0]->hdid), 'image_name' => 'baoming.jpg')
 // 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);
);
foreach($image as $v){
 $zip->add_file(file_get_contents($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');
header('Content-Disposition:attachment; filename="'.$filename.'"'); //设置下载的默认文件名
header('Content-length:'. filesize($dfile));
$fp = fopen($dfile, 'r');
while(connection_status() == 0 && $buf = @fread($fp, 8192)){
 echo $buf;
}
fclose($fp);
@unlink($dfile);
@flush();
@ob_flush();
exit();