php
class PHPZip
{
private $ctrl_dir = array();
private $datasec = array();
/**********************************************************
* ѹ������
**********************************************************/
// ------------------------------------------------------ //
// #����ָ���ļ���
//
// $archive = new PHPZip();
// $filelist = $archive->visitFile(�ļ���·��);
// print "��ǰ�ļ��е��ļ�:
";
// foreach($filelist as $file)
// printf("%s
", $file);
// ------------------------------------------------------ //
var $fileList = array();
public function visitFile($path)
{
global $fileList;
$path = str_replace("\", "/", $path);
$fdir = dir($path);
while(($file = $fdir->read()) !== false)
{
if($file == '.' || $file == '..'){ continue; }
$pathSub = preg_replace("*/{2,}*", "/", $path."/".$file); // �滻�����б��
$fileList[] = is_dir($pathSub) ? $pathSub."/" : $pathSub;
if(is_dir($pathSub)){ $this->visitFile($pathSub); }
}
$fdir->close();
return $fileList;
}
private function unix2DosTime($unixtime = 0)
{
$timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);
if($timearray['year']
{
$timearray['year'] = 1980;
$timearray['mon'] = 1;
$timearray['mday'] = 1;
$timearray['hours'] = 0;
$timearray['minutes'] = 0;
$timearray['seconds'] = 0;
}
return ( ($timearray['year'] - 1980)
| ($timearray['mon']
| ($timearray['mday']
| ($timearray['hours']
| ($timearray['minutes']
| ($timearray['seconds'] >> 1);
}
var $old_offset = 0;
private function addFile($data, $filename, $time = 0)
{
$filename = str_replace('\', '/', $filename);
$dtime = dechex($this->unix2DosTime($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 = "PK";
$fr .= " ";
$fr .= " ";
$fr .= " ";
$fr .= $hexdtime;
$unc_len = strlen($data);
$crc = crc32($data);
$zdata = gzcompress($data);
$c_len = strlen($zdata);
$zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2);
$fr .= pack('V', $crc);
$fr .= pack('V', $c_len);
$fr .= pack('V', $unc_len);
$fr .= pack('v', strlen($filename));
$fr .= pack('v', 0);
$fr .= $filename;
$fr .= $zdata;
$fr .= pack('V', $crc);
$fr .= pack('V', $c_len);
$fr .= pack('V', $unc_len);
$this->datasec[] = $fr;
$new_offset = strlen(implode('', $this->datasec));
$cdrec = "PK";
$cdrec .= " ";
$cdrec .= " ";
$cdrec .= " ";
$cdrec .= " ";
$cdrec .= $hexdtime;
$cdrec .= pack('V', $crc);
$cdrec .= pack('V', $c_len);
$cdrec .= pack('V', $unc_len);
$cdrec .= pack('v', strlen($filename) );
$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 = $new_offset;
$cdrec .= $filename;
$this->ctrl_dir[] = $cdrec;
}
var $eof_ctrl_dir = "PK ";
private 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))
. " ";
}
// ------------------------------------------------------ //
// #ѹ����������
//
// $archive = new PHPZip();
// $archive->Zip("��ѹ�����ļ�����Ŀ¼", "ZIPѹ���ļ���");
// ------------------------------------------------------ //
public function Zip($dir, $saveName)
{
if(@!function_exists('gzcompress')){ return; }
ob_end_clean();
$filelist = $this->visitFile($dir);
if(count($filelist) == 0){ return; }
foreach($filelist as $file)
{
if(!file_exists($file) || !is_file($file)){ continue; }
$fd = fopen($file, "rb");
$content = @fread($fd, filesize($file));
fclose($fd);
// 1.ɾ��$dir���ַ�(./folder/file.txtɾ��./folder/)
// 2.������/��ɾ��(/file.txtɾ��/)
$file = substr($file, strlen($dir));
if(substr($file, 0, 1) == "\" || substr($file, 0, 1) == "/"){ $file = substr($file, 1); }
$this->addFile($content, $file);
}
$out = $this->file();
$fp = fopen($saveName, "wb");
fwrite($fp, $out, strlen($out));
fclose($fp);
}
// ------------------------------------------------------ //
// #ѹ����ֱ������
//
// $archive = new PHPZip();
// $archive->ZipAndDownload("��ѹ�����ļ�����Ŀ¼");
// ------------------------------------------------------ //
public function ZipAndDownload($dir)
{
if(@!function_exists('gzcompress')){ return; }
ob_end_clean();
$filelist = $this->visitFile($dir);
if(count($filelist) == 0){ return; }
foreach($filelist as $file)
{
if(!file_exists($file) || !is_file($file)){ continue; }
$fd = fopen($file, "rb");
$content = @fread($fd, filesize($file));
fclose($fd);
// 1.ɾ��$dir���ַ�(./folder/file.txtɾ��./folder/)
// 2.������/��ɾ��(/file.txtɾ��/)
$file = substr($file, strlen($dir));
if(substr($file, 0, 1) == "\" || substr($file, 0, 1) == "/"){ $file = substr($file, 1); }
$this->addFile($content, $file);
}
$out = $this->file();
@header('Content-Encoding: none');
@header('Content-Type: application/zip');
@header('Content-Disposition: attachment ; filename=Farticle'.date("YmdHis", time()).'.zip');
@header('Pragma: no-cache');
@header('Expires: 0');
print($out);
}
/**********************************************************
* ��ѹ����
**********************************************************/
// ------------------------------------------------------ //
// ReadCentralDir($zip, $zipfile)
// $zip�Ǿ���@fopen($zipfile, 'rb')�
摘自 lpdx111的专栏
