Method for compressing multiple pictures of PHP into ZIP

In this paper, we share the specific codes of PHP compressed into ZIP for your reference, the specific contents are as follows

Multiple files can be compressed into one zip compressed package, and the file name can be customized (compatible with Chinese file name)

<?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);   
 // Determine whether the file name contains Chinese 
 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);
 }

 /**
 *  Transcode to UTF-8
 * @param $keyword  String to transcode 
 */
 function iconv_to_utf8($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');// Produce 1 Temporary files for caching downloaded files 
$zip = new zipfile();

 


//----------------------
$filename = 'image.zip'; // Default file name for download 
$filename = $filename;
$host = 'http://test.love11.com';
//$dir_name = $host.'/images/point_qrcode/';
$image = array(
 array('image_src' => 'test2.jpg', 'image_name' => ' Chinese 1.jpg'),
 array('image_src' => 'weixin.jpg', 'image_name' => ' Chinese 2.jpg'),
);

foreach($image as $v){ 
 $zip->add_file(file_get_contents($dir_name.urlencode($v['image_src'])), $v['image_name']);
 //  Add a packaged picture, the 1 The parameter is the picture content, and the 2 The parameter is the name displayed in the compressed package ,  Inclusive path 
 //  Or want to pack the whole directory   Use  $zip->add_path($image_path);
}
//----------------------
$zip->output($dfile);
//  Download a file 
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="'.$filename.'"'); // Set the default file name for download 
header('Content-length:'. filesize($dfile));
$fp = fopen($dfile, 'r');
while(connection_status() == 0 && $buf = @fread($fp, 8192)){
 echo $buf;
}
fclose($fp);
@unlink($dfile);
@flush();
@ob_flush();
exit();
?>