How to package zip image download in php

这篇文章主要介绍了关于php打包zip图片下载的方法，有着一定的参考价值，现在分享给大家，有需要的朋友可以参考一下

1.引入类包 zipfile

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);
    }
}

2.实例

$dfile =  tempnam('/tmp', 'tmp');//产生一个临时文件，用于缓存下载文件
$zip = new \Org\Util\Zipfile();
//----------------------
$filename = '二维码'.date("Y-m-d H:i",time()).'.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
$params['ids'] = explode(',',$params['ids']);

//获取图片
$image = array(
     array('image_src' => 'pic1.jpg', 'image_name' => '图片1.jpg'),
     array('image_src' => 'pic2.jpg', 'image_name' => 'pic/图片2.jpg'),
);

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();

值得一提的是 打包下载时中文文件夹或中文名出现乱码时可用下面方法解决

$name = iconv('utf-8','gb2312',$name);

以上就是本文的全部内容，希望对大家的学习有所帮助，更多相关内容请关注PHP中文网！

相关推荐：

php web请求安全处理

php cocket的使用方法

The above is the detailed content of How to package zip image download in php. For more information, please follow other related articles on the PHP Chinese website!