PHP多个图片压缩成ZIP的方法


             本文实例为大家分享了PHP多个图片压缩成ZIP的具体代码，供大家参考，具体内容如下

可将多个文件压缩成一个zip压缩包，文件名可自定义（兼容中文文件名）





<?php

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

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){ 

    $name = urldecode($name);      

 //判断文件名中是否含有中文

 if (preg_match("/[\x7f-\xff]/", $name)) { 

  $name = $this->iconv_to_utf8($name,'GB2312');

 }

 

    $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);

  }



 /**

 * 转码为UTF-8

 * @param $keyword 要转码的字符串

 */

 function iconv_to_utf8($keyword, $to='UTF-8'){

 $encode = mb_detect_encoding($keyword, array('ASCII','UTF-8','GBK','GB2312'));

 if($encode != $to){

  $keyword = iconv($encode, $to, $keyword);

 }

 return $keyword;

 }





}



$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

$filename = $filename;

$host = 'http://test.love11.com';

//$dir_name = $host.'/images/point_qrcode/';

$image = array(

  array('image_src' => 'test2.jpg', 'image_name' => '中文1.jpg'),

  array('image_src' => 'weixin.jpg', 'image_name' => '中文2.jpg'),

);



foreach($image as $v){ 

  $zip->add_file(file_get_contents($dir_name.urlencode($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();

?>



以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持中文源码网。