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：

<?phpinclude"zip.class.php";$zip=newzip();//获取压缩包文件列表print_r($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$Id:zip.class.php115:212010年7月5日Ztianya$*@packageDedeCMS.Libraries*@copyrightCopyright(c)2007-2010,DesDev,Inc.*@licensehttp://help.dedecms.com/usersguide/license.html*@linkhttp://www.dedecms.com*/classzip{var$datasec,$ctrl_dir=array();var$eof_ctrl_dir="\x50\x4b\x05\x06\x00\x00\x00\x00";var$old_offset=0;var$dirs=Array(".");/***获取zip文件中的文件列表**@accesspublic*@paramstring$zip_namezip文件名*@returnarray*/functionget_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**@accesspublic*@paramstring$files需要增加的文件列表,可以是字符串也可以是数组*@paramstring$compact压缩文件名称*@returnarray压缩文件信息*/functionAdd($files,$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**@accesspublic*@returnvoid*/functionget_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($data))."\x00\x00";}/***增加文件目录**@accesspublic*@paramstring$name目录名称*@returnvoid*/functionadd_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）**@accesspublic*@paramstring$filename文件名称*@paramstring$tozipfilename压缩文件名称*@paramstring$ftype压缩类型*@returnint影响文件数*/functionCompileZipFile($filename,$tozipfilename,$ftype='dir'){if(@function_exists('gzcompress')){if($ftype=='dir'){$filelist=$this->ListDirFiles($filename);}elseif($ftype=='file'){$filelist[]=$filename;}else{$filelist=$filename;}$i=0;if(count($filelist)>0){foreach($filelistas$filename){if(is_file($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{return0;}}/***读取某文件夹的所有文件**@accesspublic*@paramstring$dirname目录名称*@returnmix如果失败则返回false*/functionListDirFiles($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$files;}/***增加文件**@accesspublic*@paramstring$data数据*@paramstring$name名称*@paramstring$compact压缩*@returnstring*/functionadd_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;returntrue;}/***返回时间**@accesspublic*@returnint*/functionDosTime(){$timearray=getdate();if($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**@accesspublic*@paramstring$znzip文件名称*@paramstring$to解压到的目录地址*@returnstring*/functionExtractAll($zn,$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,$to);}/***解压单个文件**@accesspublic*@paramstring$znzip文件名称*@paramstring$to解压到的目录地址*@returnstring*/functionExtract($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$stat;}functionReadFileHeader($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;}functionReadCentralFileHeaders($zip){$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;}functionReadCentralDir($zip,$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;}functionExtractFile($header,$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')ordie("Cettearchiveestcompress");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');}}returntrue;}}