thinkphp 打包下载img图片

//图片根据联机打包下载

    public function  zip(){

//引用打包插件,因为不能上传文件,可考下面代码保存

vendor('zipfile.zipfile');

//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 \zipfile();

//----------------------

        $filename= 'image.zip';//下载的默认文件名

//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

        $image= array(

array('image_src' => 'http://project.xxq/upload/image/20190906/1567758112602270.jpg','image_name' => '1567758112602270.jpg'),

array('image_src' => 'http://project.xxq/upload/image/20190906/1567758220245707.jpg','image_name' => '1567758220245707.jpg'),

);

foreach($imageas $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();

}

//复制下面代码保存

class zipfile {

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 {

$this->add_file(file_get_contents($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);

}

}