php文件打包下载

php 图片打包下载

1.新建类

<?php


namespace AppHttpControllersAdmin;


use AppHttpControllersController;


class ZipfileController extends Controller
{
  public $datasec = array ();
  public $ctrl_dir = array ();
  public $eof_ctrl_dir = "x50x4bx05x06x00x00x00x00";
  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 = "x50x4bx03x04";
    $fr .= "x14x00";
    $fr .= "x00x00";
    $fr .= "x08x00";
    $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 = "x50x4bx01x02";
    $cdrec .= "x00x00";
    $cdrec .= "x14x00";
    $cdrec .= "x00x00";
    $cdrec .= "x08x00";
    $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)) . "x00x00";
  }
   
  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();