PHP implementation file Online decompression _php tutorial

Verify Password
$password = "123456";
?>

<title>Faisun_unzip-Pure Space-www.softpure.com</title>





if (!$_request["Myaction"]):
?>

Faisun_unzip-Online Unzip zip file program V1.0 Reprint Please specify: This program is provided by pure space (http://www.softpure.com), Author: Faisun (faisun@sina.com). How to use: Upload the zip file via FTP to the same directory as this file, select the zip file, or simply click "Browse ..." to upload the zip file. The extracted results retain the original directory structure.
Select Zip file:	-Please select- $fdir = Opendir ('./'), while ($file =readdir ($fdir)) {if (!is_file ($file)) continue; if (Preg_match ('/.zip$/ Mis ', $file)) {echo "$filern "; }}?>
or upload a file:
Extract to Directory:	(Leave blank for this directory, must have write permission)
Verify Password:	(password set in the source file)

ElseIf ($_request["myaction"]== "Dounzip"):


Class zip
{

var $total _files = 0;
var $total _folders = 0;

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) * *, $year = (($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) * *;
$year = (($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 or $bytes = = 0x2e706870504b0506) {$pos ++;break;} $pos + +;
}

$fdata =fread ($zip, 18);

$data = @unpack (' vdisk/vdisk_start/vdisk_entries/ventries/vsize/voffset/vcomment_size ', $fdata);

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)! = "/") $to. = "/";
if ($to = = './') $to = ';
$pth = Explode ("/", $to. $header [' filename ']);
$mydir = ";
for ($i =0; $i <>
if (! $pth [$i]) continue;
$mydir. = $pth [$i]. " /";
if (!is_dir ($mydir) && @mkdir ($mydir, 0777)) | | ($mydir = = $to. $header [' filename '] | | ($mydir = = $to && $this->total_folders==0)) && Is_dir ($mydir))) {
@chmod ($mydir, 0777);
$this->total_folders + +;
echo " Catalog: $mydir
";
}
}

if (STRRCHR ($header [' filename '], '/') = = '/') return;

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 < 1024x768 $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

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