php zip文件解压类代码

　　复制代码 代码如下:
class zip
{
var $datasec, $ctrl_dir = array();
var $eof_ctrl_dir = \x50\x4b\x05\x06\x00\x00\x00\x00;
var $old_offset = 0; var $dirs = Array(.);
function get_List($zip_name)
{
$zip = @fopen($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 $ret;
}
function Add($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;
}
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($data)) . \x00\x00;
}
function add_dir($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[] = $name;
}
function add_File($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;
}
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);
}
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; $index[$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);
if(substr($to,-1)!=/) $to.=/;
if(!@is_dir($to)) @mkdir($to,0777);
$pth = explode(/,dirname($header[filename]));
for($i=0;isset($pth[$i]);$i++){
if(!$pth[$i]) continue;
if(!is_dir($to.$pth[$i])) @mkdir($to.$pth[$i],0777);
}
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.$header[filename]..gz,rb) or die(Cette archive est compress閑);
if(!$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;
}
}
/***********************************/
class zipPeter{
var $_zip_hander = null;
function __construct(){

}
function get_List($zip_name){
$file_list = array();
$this->_zip_hander = zip_open($zip_name);
if ( $this->_zip_hander ) {
while ( $zip_entry = zip_read($this->_zip_hander) ) {
$file_list[] = array(filename=>zip_entry_name($zip_entry),
size=>zip_entry_filesize($zip_entry),
compressed_size=>zip_entry_compressedsize($zip_entry)
);
}
zip_close($this->_zip_hander);
}
return $file_list;
}
function Extract($zip_name,$folder_name){
$this->_zip_hander = zip_open($zip_name);
if ( !$this->checkDirAndMk($folder_name) ){
return false;
}
if ( substr($folder_name,-1)!=/ ){
$folder_name .= /;
}
if ( $this->_zip_hander ) {
while ( $zip_entry = zip_read($this->_zip_hander) ) {
$file_info = array(filename=>zip_entry_name($zip_entry),
size=>zip_entry_filesize($zip_entry),
compressed_size=>zip_entry_compressedsize($zip_entry)
);
$new_file_name = $folder_name.$file_info[filename];
$buf = ;
if (zip_entry_open($this->_zip_hander, $zip_entry, r)) {
$buf = zip_entry_read($zip_entry, zip_entry_filesize($zip_entry));
zip_entry_close($zip_entry);
}
if ( $fp = fopen($new_file_name,w) ){
fwrite($fp,$buf);
fclose($fp);
}
}
zip_close($this->_zip_hander);
return true;
}
else {
return false;
}
}
/**
* 检查目录是否存在，如果不存在是否建立
*
* @param string $dirname完整的实际路径
* @param bool $mk如果不存在是否创建
* @param int $mode创建权限
* @return bool是否创建成功
*/
function checkDirAndMk($dirname,$mk=false,$mode=0777){
if ( is_dir($dirname)==true ){
return true;
}
else {
if ($mk==false){
return false;
}
else {
$dirpath_a = explode(/,$dirname);
for ($i=0;$i<count($dirpath_a);$i++){
if ( $dirpath_a[$i]== ){
continue;
}
if ( $path==is_dir($path) ){
if ( $path== ){
if ( substr(PHP_OS, 0, 3)==WIN ){
$path = $dirpath_a[$i];
}
else {
$path .= /.$dirpath_a[$i];
}
}
else {
$path .= /.$dirpath_a[$i];
}
if ( is_dir($path) ){
continue;
}
else {
@mkdir($path,$mode);
}
}
else {
return false;
}
}
return true;
}
}
}
}


$z = new Zip;
$lst=$z->get_list(test2.zip);
foreach ($lst as $val){
print_r($val).\n;
}
$zip_obj = new zipPeter();
//$zip_obj->Extract()
$z->Extract(test2.zip, f:/wytddd, -1 );
/***/

require_once(zip.lib.php);
set_time_limit(100);
//要解压的文件路径
$arch = $_GET[arch];
if(!$arch !file_exists($arch))
$z = new Zip;
$l=$z->get_list($arch); //得到文件列表
$z->Extract($arch, jieya, -1 );
}