从织梦DeDeCMS中提取的zip压缩文件操作类，包含zip文件压缩、解压缩、添加文件到压缩包中等多个实用的函数，注释详细方便使用。
下载：dedecms中提取的zip压缩文件操作类zip.class.php
包含的函数和简单的使用方法：
1.函数get_List($zip_name) ，函数作用：获取zip文件中的文件列表。函数参数 $zip_name zip文件名。返回值 文件列表数组。
2.函数Add($files,$compact)，函数作用：增加文件到压缩文件。函数参数 $files 需要增加的文件列表,可以是字符串也可以是数组，$compact 压缩文件名称。函数返回值 数组 压缩文件信息。
3.函数get_file()，函数作用：获取文件,获取后可以让其进行下载。
4.函数add_dir($name)，函数作用：增加文件目录。函数参数 $name 目录名称。
5.函数CompileZipFile($filename, $tozipfilename,$ftype='dir')，函数作用：编译指定的文件为zip文件（filename可以为文件数组array、目录dir或单个文件file）。函数参数 $filename 文件名称，$tozipfilename 压缩文件名称，$ftype 压缩类型。返回值 整型 影响文件数。
6.函数ListDirFiles($dirname)，函数作用：读取某文件夹的所有文件。函数参数 $dirname 目录名称。返回值 如果失败则返回false。
7.函数add_File($data, $name, $compact = 1)，函数作用：增加文件。函数参数 $data 数据，$name 名称，$compact 压缩。
8.函数ExtractAll ( $zn, $to)，函数作用：解压整个压缩包 直接用 Extract 会有路径问题，本函数先从列表中获得文件信息并创建好所有目录然后才运行 Extract。函数参数 $zn zip文件名称，$to 解压到的目录地址。
9.函数Extract ( $zn, $to, $index = Array(-1) )，函数作用：解压单个文件。函数参数 $zn zip文件名称，$to 解压到的目录地址。
简单使用方法：
<?php
include "zip.class.php";
$zip = new zip();
//获取压缩包文件列表
print_r($zip->get_List("www.zip"));
//向压缩包中增加文件
print_r($zip->Add("test.txt","www.zip"));
//压缩文件
echo $zip->CompileZipFile("test.txt","test.zip","file");
//压缩多个文件
echo $zip->CompileZipFile(array('test1.txt','test2.jpg','test3.png'),"test.zip","array");
//压缩目录
echo $zip->CompileZipFile("test","test.zip","dir");
//目录文件列表
print_r($zip->ListDirFiles("a"));
//解压所有文件
$zip->ExtractAll("www.zip","www");
//解压单个文件
$zip->Extract("www.zip","www",1);
?>
zip.class.php完整代码：
<?php
/**
* Zip压缩类
*
* @version $Id: zip.class.php 1 15:21 2010年7月5日Z tianya $
* @package DedeCMS.Libraries
* @copyright Copyright (c) 2007 - 2010, DesDev, Inc.
* @license http://help.dedecms.com/usersguide/license.html
* @link http://www.dedecms.com
*/
class zip
{
var $datasec, $ctrl_dir = array();
var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
var $old_offset = 0; var $dirs = Array(".");
/**
* 获取zip文件中的文件列表
*
* @access public
* @param string $zip_name zip文件名
* @return array
*/
function get_List($zip_name)
{
$ret = '';
$zip = @fopen($zip_name, 'rb');
if(!$zip)
{
return(0);
}
$centd = $this->ReadCentralDir($zip,$zip_name);
@rewind($zip);
@fseek($zip, $centd['offset']);
for ($i=0; $i<$centd['entries']; $i++)
{
$header = $this->ReadCentralFileHeaders($zip);
$header['index'] = $i;$info['filename'] = $header['filename'];
$info['stored_filename'] = $header['stored_filename'];
$info['size'] = $header['size'];$info['compressed_size']=$header['compressed_size'];
$info['crc'] = strtoupper(dechex( $header['crc'] ));
$info['mtime'] = $header['mtime']; $info['comment'] = $header['comment'];
$info['folder'] = ($header['external']==0x41FF0010||$header['external']==16)?1:0;
$info['index'] = $header['index'];$info['status'] = $header['status'];
$ret[]=$info; unset($header);
}
return $ret;
}
/**
* 增加文件到压缩文件
*
* @access public
* @param string $files 需要增加的文件列表,可以是字符串也可以是数组
* @param string $compact 压缩文件名称
* @return array 压缩文件信息
*/
function Add($files,$compact)
{
if(!is_array($files[0]))
{
$files=Array($files);
}
for($i=0;$files[$i];$i++)
{
$fn = $files[$i];
if(!in_Array(dirname($fn[0]),$this->dirs))
{
$this->add_Dir(dirname($fn[0]));
}
if(basename($fn[0]))
{
$ret[basename($fn[0])]=$this->add_File($fn[1],$fn[0],$compact);
}
}
return $ret;
}
/**
* 获取文件,获取后可以让其进行下载
*
* @access public
* @return void
*/
function get_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";
}
/**
* 增加文件目录
*
* @access public
* @param string $name 目录名称
* @return void
*/
function add_dir($name)
{
$name = str_replace("\\", "/", $name);
$fr = "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00";
$fr .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) );
$fr .= pack("v", 0 ).$name.pack("V", 0).pack("V", 0).pack("V", 0);
$this -> datasec[] = $fr;
$new_offset = strlen(implode("", $this->datasec));
$cdrec = "\x50\x4b\x01\x02\x00\x00\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00";
$cdrec .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) );
$cdrec .= pack("v", 0 ).pack("v", 0 ).pack("v", 0 ).pack("v", 0 );
$ext = "\xff\xff\xff\xff";
$cdrec .= pack("V", 16 ).pack("V", $this -> old_offset ).$name;
$this -> ctrl_dir[] = $cdrec;
$this -> old_offset = $new_offset;
$this -> dirs[] = $name;
}
/**
* 编译指定的文件为zip文件（filename可以为文件数组array、目录dir或单个文件file）
*
* @access public
* @param string $filename 文件名称
* @param string $tozipfilename 压缩文件名称
* @param string $ftype 压缩类型
* @return int 影响文件数
*/
function CompileZipFile($filename, $tozipfilename,$ftype='dir')
{
if (@function_exists('gzcompress'))
{
if($ftype=='dir')
{
$filelist = $this->ListDirFiles($filename);
}
else if($ftype=='file')
{
$filelist[] = $filename;
}
else
{
$filelist = $filename;
}
$i = 0;
if(count($filelist)>0)
{
foreach($filelist as $filename)
{
if (is_file($filename))
{
$i++;
$fd = fopen ($filename, "r");
if(filesize($filename)>0)
{
$content = fread($fd, filesize($filename));
}
else
{
$content = ' ';
}
fclose ($fd);
//if (is_array($dir)) $filename = basename($filename);
$this->add_File($content, $filename);
}
}
$out = $this->get_file();
$fp = fopen($tozipfilename, "w");
fwrite($fp, $out, strlen($out));
fclose($fp);
}
return $i;
}
else
{
return 0;
}
}
/**
* 读取某文件夹的所有文件
*
* @access public
* @param string $dirname 目录名称
* @return mix 如果失败则返回false
*/
function ListDirFiles($dirname)
{
$files = array();
if(is_dir($dirname))
{
$fh = opendir($dirname);
while (($file = readdir($fh)) !== false)
{
if (strcmp($file, '.')==0 || strcmp($file, '..')==0)
{
continue;
}
$filepath = $dirname . '/' . $file;
if ( is_dir($filepath) )
{
$files = array_merge($files, $this->ListDirFiles($filepath));
}
else
{
array_push($files, $filepath);
}
}
closedir($fh);
}
else
{
$files = false;
}
return $files;
}
/**
* 增加文件
*
* @access public
* @param string $data 数据
* @param string $name 名称
* @param string $compact 压缩
* @return string
*/
function add_File($data, $name, $compact = 1)
{
$name = str_replace('\\', '/', $name);
$dtime = dechex($this->DosTime());
$hexdtime = '\x' . $dtime[6] . $dtime[7].'\x'.$dtime[4] . $dtime[5]
. '\x' . $dtime[2] . $dtime[3].'\x'.$dtime[0].$dtime[1];
eval('$hexdtime = "' . $hexdtime . '";');
if($compact)
$fr = "\x50\x4b\x03\x04\x14\x00\x00\x00\x08\x00".$hexdtime;
else
{
$fr = "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00".$hexdtime;
}
$unc_len = strlen($data); $crc = crc32($data);
if($compact)
{
$zdata = gzcompress($data); $c_len = strlen($zdata);
$zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2);
}
else
{
$zdata = $data;
}
$c_len=strlen($zdata);
$fr .= pack('V', $crc).pack('V', $c_len).pack('V', $unc_len);
$fr .= pack('v', strlen($name)).pack('v', 0).$name.$zdata;
$fr .= pack('V', $crc).pack('V', $c_len).pack('V', $unc_len);
$this -> datasec[] = $fr;
$new_offset = strlen(implode('', $this->datasec));
if($compact)
{
$cdrec = "\x50\x4b\x01\x02\x00\x00\x14\x00\x00\x00\x08\x00";
}
else
{
$cdrec = "\x50\x4b\x01\x02\x14\x00\x0a\x00\x00\x00\x00\x00";
}
$cdrec .= $hexdtime.pack('V', $crc).pack('V', $c_len).pack('V', $unc_len);
$cdrec .= pack('v', strlen($name) ).pack('v', 0 ).pack('v', 0 );
$cdrec .= pack('v', 0 ).pack('v', 0 ).pack('V', 32 );
$cdrec .= pack('V', $this -> old_offset );
$this -> old_offset = $new_offset;
$cdrec .= $name;
$this -> ctrl_dir[] = $cdrec;
return true;
}
/**
* 返回时间
*
* @access public
* @return int
*/
function DosTime()
{
$timearray = getdate();
if ($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);
}
/**
* 解压整个压缩包
* 直接用 Extract 会有路径问题，本函数先从列表中获得文件信息并创建好所有目录然后才运行 Extract
*
* @access public
* @param string $zn zip文件名称
* @param string $to 解压到的目录地址
* @return string
*/
function ExtractAll ( $zn, $to)
{
if(substr($to,-1)!="/")
{
$to .= "/";
}
$files = $this->get_List($zn);
$cn = count($files);
if(is_array($files))
{
for($i=0;$i<$cn;$i++)
{
if($files[$i]['folder']==1)
{
@mkdir($to.$files[$i]['filename'],$GLOBALS['cfg_dir_purview']);
@chmod($to.$files[$i]['filename'],$GLOBALS['cfg_dir_purview']);
}
}
}
$this->Extract ($zn,$to);
}
/**
* 解压单个文件
*
* @access public
* @param string $zn zip文件名称
* @param string $to 解压到的目录地址
* @return string
*/
function Extract ( $zn, $to, $index = Array(-1) )
{
$ok = 0; $zip = @fopen($zn,'rb');
if(!$zip)
{
return(-1);
}
$cdir = $this->ReadCentralDir($zip,$zn);
$pos_entry = $cdir['offset'];
if(!is_array($index))
{
$index = array($index);
}
for($i=0; isset($index[$i]);$i++)
{
if(intval($index[$i])!=$index[$i]||$index[$i]>$cdir['entries'])
{
return(-1);
}
}
for ($i=0; $i<$cdir['entries']; $i++)
{
@fseek($zip, $pos_entry);
$header = $this->ReadCentralFileHeaders($zip);
$header['index'] = $i; $pos_entry = ftell($zip);
@rewind($zip); fseek($zip, $header['offset']);
if(in_array("-1",$index)||in_array($i,$index))
{
$stat[$header['filename']]=$this->ExtractFile($header, $to, $zip);
}
}
fclose($zip);
return $stat;
}
function ReadFileHeader($zip)
{
$binary_data = fread($zip, 30);
$data = unpack('vchk/vid/vversion/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len', $binary_data);
$header['filename'] = fread($zip, $data['filename_len']);
if ($data['extra_len'] != 0)
{
$header['extra'] = fread($zip, $data['extra_len']);
}
else
{
$header['extra'] = '';
}
$header['compression'] = $data['compression'];$header['size'] = $data['size'];
$header['compressed_size'] = $data['compressed_size'];
$header['crc'] = $data['crc']; $header['flag'] = $data['flag'];
$header['mdate'] = $data['mdate'];$header['mtime'] = $data['mtime'];
if ($header['mdate'] && $header['mtime'])
{
$hour=($header['mtime']&0xF800)>>11;$minute=($header['mtime']&0x07E0)>>5;
$seconde=($header['mtime']&0x001F)*2;$year=(($header['mdate']&0xFE00)>>9)+1980;
$month=($header['mdate']&0x01E0)>>5;$day=$header['mdate']&0x001F;
$header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);
}
else
{
$header['mtime'] = time();
}
$header['stored_filename'] = $header['filename'];
$header['status'] = "ok";
return $header;
}
function ReadCentralFileHeaders($zip)
{
$binary_data = fread($zip, 46);
$header = unpack('vchkid/vid/vversion/vversion_extracted/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len/vcomment_len/vdisk/vinternal/Vexternal/Voffset', $binary_data);
if ($header['filename_len'] != 0)
{
$header['filename'] = fread($zip,$header['filename_len']);
}
else
{
$header['filename'] = '';
}
if ($header['extra_len'] != 0)
{
$header['extra'] = fread($zip, $header['extra_len']);
}
else
{
$header['extra'] = '';
}
if ($header['comment_len'] != 0)
{
$header['comment'] = fread($zip, $header['comment_len']);
}
else
{
$header['comment'] = '';
}
if ($header['mdate'] && $header['mtime'])
{
$hour = ($header['mtime'] & 0xF800) >> 11;
$minute = ($header['mtime'] & 0x07E0) >> 5;
$seconde = ($header['mtime'] & 0x001F)*2;
$year = (($header['mdate'] & 0xFE00) >> 9) + 1980;
$month = ($header['mdate'] & 0x01E0) >> 5;
$day = $header['mdate'] & 0x001F;
$header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);
}
else
{
$header['mtime'] = time();
}
$header['stored_filename'] = $header['filename'];
$header['status'] = 'ok';
if (substr($header['filename'], -1) == '/')
{
$header['external'] = 0x41FF0010;
}
return $header;
}
function ReadCentralDir($zip,$zip_name)
{
$size = filesize($zip_name);
if ($size < 277)
{
$maximum_size = $size;
}
else
{
$maximum_size=277;
}
@fseek($zip, $size-$maximum_size);
$pos = ftell($zip); $bytes = 0x00000000;
while ($pos < $size)
{
$byte = @fread($zip, 1); $bytes=($bytes << 8) | Ord($byte);
if ($bytes == 0x504b0506)
{
$pos++; break;
}
$pos++;
}
$data = @unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size',fread($zip, 18));
if ($data['comment_size'] != 0)
{
$centd['comment'] = fread($zip, $data['comment_size']);
}
else
{
$centd['comment'] = ''; $centd['entries'] = $data['entries'];
}
$centd['disk_entries'] = $data['disk_entries'];
$centd['offset'] = $data['offset'];$centd['disk_start'] = $data['disk_start'];
$centd['size'] = $data['size']; $centd['disk'] = $data['disk'];
return $centd;
}
function ExtractFile($header,$to,$zip)
{
$header = $this->readfileheader($zip);
$header['external'] = (!isset($header['external']) ? 0 : $header['external']);
if(substr($to,-1)!="/")
{
$to.="/";
}
if(!@is_dir($to))
{
@mkdir($to,$GLOBALS['cfg_dir_purview']);
}
if (!($header['external']==0x41FF0010)&&!($header['external']==16))
{
if ($header['compression']==0)
{
$fp = @fopen($to.$header['filename'], 'wb');
if(!$fp)
{
return(-1);
}
$size = $header['compressed_size'];
while ($size != 0)
{
$read_size = ($size < 2048 ? $size : 2048);
$buffer = fread($zip, $read_size);
$binary_data = pack('a'.$read_size, $buffer);
@fwrite($fp, $binary_data, $read_size);
$size -= $read_size;
}
fclose($fp);
touch($to.$header['filename'], $header['mtime']);
}
else
{
$fp = @fopen($to.$header['filename'].'.gz','wb');
if(!$fp)
{
return(-1);
}
$binary_data = pack('va1a1Va1a1', 0x8b1f, Chr($header['compression']),
Chr(0x00), time(), Chr(0x00), Chr(3));
fwrite($fp, $binary_data, 10);
$size = $header['compressed_size'];
while ($size != 0)
{
$read_size = ($size < 1024 ? $size : 1024);
$buffer = fread($zip, $read_size);
$binary_data = pack('a'.$read_size, $buffer);
@fwrite($fp, $binary_data, $read_size);
$size -= $read_size;
}
$binary_data = pack('VV', $header['crc'], $header['size']);
fwrite($fp, $binary_data,8); fclose($fp);
$gzp = @gzopen($to.$header['filename'].'.gz','rb') or die("Cette archive est compress");
if(!$gzp)
{
return(-2);
}
$fp = @fopen($to.$header['filename'],'wb');
if(!$fp)
{
return(-1);
}
$size = $header['size'];
while ($size != 0)
{
$read_size = ($size < 2048 ? $size : 2048);
$buffer = gzread($gzp, $read_size);
$binary_data = pack('a'.$read_size, $buffer);
@fwrite($fp, $binary_data, $read_size);
$size -= $read_size;
}
fclose($fp); gzclose($gzp);
touch($to.$header['filename'], $header['mtime']);
@unlink($to.$header['filename'].'.gz');
}
}
return true;
}
}