PHP操作Zip_PHP教程

class PHPZip

{

private $ctrl_dir = array();

private $datasec = array();




/**********************************************************

* ѹ������

**********************************************************/

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

// #����ָ���ļ���

//

// $archive = new PHPZip();

// $filelist = $archive->visitFile(�ļ���·��);

// print "��ǰ�ļ��е��ļ�:

\r\n";

// foreach($filelist as $file)

// printf("%s
\r\n", $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'] < 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);

}





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 = "\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);

$c_len = strlen($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 = "\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);

$cdrec .= pack('v', strlen($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 = "\x50\x4b\x05\x06\x00\x00\x00\x00";

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))

. "\x00\x00";

}





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

// #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

http://www.bkjia.com/PHPjc/478171.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/478171.htmlTechArticle?php class PHPZip { private $ctrl_dir = array(); private $datasec = array(); /********************************************************** * *****************************************...