PHP解压ZIP

效果如下：

<?PHP

header("content-type:text/html;charset=utf-8");

//验证密码，请自行修改以免被人攻击

$password = "666666";

<html>

<head>

<title>zip文件解压</title>

<!--

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="<?PHP echo $_SERVER['PHP_SELF'];?>" enctype="multipart/form-data" onSubmit="return check_uploadobject(this);">

<?PHP

if(!isset($_REQUEST["myaction"])):

function check_uploadobject(form){

if(form.password.value==''){

alert('请输入密码.');

return false;

}

return true;

}

</script>

<tr>

<td height="40" colspan="2" color:#FF9900"><p><font color="#FF0000">在线解压ZIP文件程序</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>

<p>解压的结果保留原来的目录结构。</p>

</tr>

<tr>

<td width="11%">选择ZIP文件: </td>

<?PHP

$fdir = opendir('./');

while($file=readdir($fdir)){

if(!is_file($file)) continue;

if(preg_match('/.zip$/mis',$file)){

echo "<option value='$file'>$file</option>rn";

}

</select></td>

</tr>

<tr>

<td width="11%" Nowrap>或上传文件: </td>

</tr>

<tr>

<td>解压到目录: </td>

(留空为本目录,必须有写入权限)</td>

</tr>

<tr>

(源文件中设定的密码)</td>

</tr>

<tr>

</tr>

</table>

<?PHP

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,$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,$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($header,$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,10);

$size = $header['compressed_size'];

while ($size != 0){

$read_size = ($size < 1024 ? $size : 1024);

$buffer = fread($zip,$read_size);

$size -= $read_size;

}

$binary_data = pack('VV',$header['crc'],$header['size']);

fwrite($fp,8); fclose($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);

$size -= $read_size;

}

fclose($fp); gzclose($gzp);

touch($to.$header['filename'],$header['mtime']);

@unlink($to.$header['filename'].'.gz');

}

$this->total_files ++;

echo "<input name='dfile[]' type='checkBox' value='$to$header[filename]' checked> <a href='$to$header[filename]' target='_blank'>文件: $to$header[filename]</a><br>";

return true;

}

// end class

}

set_time_limit(0);

if ($_POST['password'] != $password) die("输入的密码不正确，请重新输入。");

if(!$_POST["todir"]) $_POST["todir"] = ".";

$z = new Zip;

$have_zip_file = 0;

function start_unzip($tmp_name,$new_name,$checked){

global $_POST,$z,$have_zip_file;

$upfile = array("tmp_name"=>$tmp_name,"name"=>$new_name);

if(is_file($upfile['tmp_name'])){

$have_zip_file = 1;

echo "<br>正在解压: <input name='dfile[]' type='checkBox' value='$upfile[name]' ".($checked?"checked":"")."> $upfile[name]<br><br>";

if(preg_match('/.zip$/mis',$upfile['name'])){

$result=$z->Extract($upfile['tmp_name'],$_POST["todir"]);

if($result==-1){

echo "<br>文件 $upfile[name] 错误.<br>";

}

echo "<br>完成,共建立 $z->total_folders 个目录,$z->total_files 个文件.<br><br><br>";

}else{

echo "<br>$upfile[name] 不是 zip 文件.<br><br>";

}

if(realpath($upfile['name'])!=realpath($upfile['tmp_name'])){

@unlink($upfile['name']);

rename($upfile['tmp_name'],$upfile['name']);

}

clearstatcache();

start_unzip($_POST["zipfile"],$_POST["zipfile"],0);

start_unzip($_FILES["upfile"]['tmp_name'],$_FILES["upfile"]['name'],1);

if(!$have_zip_file){

echo "<br>请选择或上传文件.<br>";

}

function selrev() {

with(document.myform) {

for(i=0;i<elements.length;i++) {

thiselm = elements[i];

if(thiselm.name.match(/dfile[]/)) thiselm.checked = !thiselm.checked;

}

alert('完成.');

</script>

<?PHP

elseif($_REQUEST["myaction"]=="dodelete"):

set_time_limit(0);

if ($_POST['password'] != $password) die("输入的密码不正确，请重新输入。");

$dfile = $_POST["dfile"];

echo "正在删除文件...<br><br>";

if(is_array($dfile)){

for($i=count($dfile)-1;$i>=0;$i--){

if(is_file($dfile[$i])){

if(@unlink($dfile[$i])){

echo "已删除文件: $dfile[$i]<br>";

}else{

echo "删除文件失败: $dfile[$i]<br>";

}

}else{

if(@rmdir($dfile[$i])){

echo "已删除目录: $dfile[$i]<br>";

}else{

echo "删除目录失败: $dfile[$i]<br>";

}

echo "<br>完成.<br><br><input type='button' value='返回' onclick="window.location='".$_SERVER['PHP_SELF']."';"><br><br>

endif;

</form>

</body>

</html>

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