一段不错的PHP在线解压代码
一段不错的PHP在线解压代码
完整的代码如下：
<?php
//验证密码
$password = "123";
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>在线解压ZIP文件程序 V1.0</title>
<style type="text/css">
<!--
body,td{
font-size: 14px;
color: #000000;
}
a {
color: #000066;
text-decoration: none;
}
a:hover {
color: #FF6600;
text-decoration: underline;
}
-->
</style>
</head>
<body>
<form name="myform" method="post" action="<?=$_SERVER[PHP_SELF];?>" enctype="multipart/form-data" onSubmit="return check_uploadObject(this);">
<?
if(!$_REQUEST["myaction"]):
?>
<script language="javascript">
function check_uploadObject(form){
if(form.password.value==''){
alert('请输入密码.');
return false;
}
return true;
}
</script>
<table width="100%" cellspacing="0" cellpadding="4">
<tr>
<td height="40" colspan="2" ><p><font color="#FF0000">在线解压ZIP文件程序 V1.0</font></p>
<p>使用方法: 把zip文件通过FTP上传到本文件相同的目录下,选择zip文件;或直接点击“浏览...”上传zip文件。</p></td>
</tr>
<tr>
<td width="11%">选择ZIP文件: </td>
<td width="89%"><select name="zipfile">
<option value="" selected>- 请选择 -</option>
<?
$fdir = opendir('./');
while($file=readdir($fdir)){
if(!is_file($file)) continue;
if(preg_match('/\.zip$/mis',$file)){
echo "<option value='$file'>$file</option>\r\n";
}
}
?>
</select></td>
</tr>
<tr>
<td width="11%" nowrap>或上传文件: </td>
<td width="89%"><input name="upfile" type="file" size="20"></td>
</tr>
<tr>
<td>解压到目录: </td>
<td><input name="todir" type="text" value="__unzipfiles__" size="15">
(留空为本目录,必须有写入权限)</td>
</tr>
<tr>
<td>验证密码: </td>
<td><input name="password" type="password" size="15">
(源文件中设定的密码)</td>
</tr>
<tr>
<td><input name="myaction" type="hidden" value="dounzip"></td>
<td><input type="submit" name="Submit" value=" 解 压 "></td>
</tr>
</table>
<?
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)*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 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;$i<count($pth)-1;$i++){
if(!$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);
$this->total_folders ++;
echo "<input name='dfile[]' type='checkbox' value='$mydir' checked> <a href='$mydir' target='_blank'>目录: $mydir</a><br>";
}
}
if(strrchr($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 < 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