解压缩可以用gulp，或者node.js或者卡拉。
不过最简单的是使用现在的编码器（hbuilder为例）。
1.将被加密（压缩）的css样式拷贝进来。在操作区点击右键
2.点击“整理代码格式”。等待几秒钟
就完成了解压缩的任务。
最后提一点。css解压缩比js的相对容易。因为没有注释的js是无比头痛的。、
1、首先新建一个html文件，命名为test.html。
2、在test.html文件内,使用img标签创建一张图片显示，并设置其id属性为pic。
3、在test.html文件内,使用button标签创建一个按钮，按钮名称为“改变图片样式”。
4、在test.html文件内,给button绑定onclick点击事件，当按钮被点击时，执行cha()函数。
5、在test.html文件内,在js标签内，创建cha（）函数，在函数内，使用getElementById（）方法获得img元素对象，再使用setAttribute（）方法设置img对象的class属性为imagecss。
6、在test.html文件内,使用css定义imagecss的样式，设置为红色5px边框，宽度为300px，就可以了。
<?php//验证密码
$password = "123"
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/htmlcharset=gb2312">
<title>在线ZIP解压程序</title>
<style type="text/css">
<!--
body,td{
font-size: 14px
color: #000000
}
a {
color: #000066
text-decoration: none
}
a:hover {
color: #FF6600
text-decoration: underline
}
-->
</style>
</head>
<body>
<form name="myform" method="post" action="<?=$_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%" border="0" cellspacing="0" cellpadding="4">
<tr>
<td height="40" colspan="2" style="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>
<p> </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" id="upfile" size="20"></td>
</tr>
<tr>
<td>解压到目录: </td>
<td><input name="todir" type="text" id="todir" 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" id="password" size="15">
(源文件中设定的密码)</td>
</tr>
<tr>
<td><input name="myaction" type="hidden" id="myaction" 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.$header['filename'].'.gz','rb') or die("Cette archive est compress闲")
if(!$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')
}
}
$this->total_files ++
echo "<input name='dfile[]' type='checkbox' value='$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(!$have_zip_file){
echo "<br>请选择或上传文件.<br>"
}
?>
<input name="password" type="hidden" id="password" value="<?=$_POST['password']?>">
<input name="myaction" type="hidden" id="myaction" value="dodelete">
<input name="按钮" type="button" value="返回" onclick="window.location='<?=$_SERVER[PHP_SELF]?>'">
<input type='button' value='反选' onclick='selrev()'><input type='submit' onclick='return confirm("删除选定文件?")' value='删除选定'>
<script language='javascript'>
function selrev() {
with(document.myform) {
for(i=0i<elements.lengthi++) {
thiselm = elements[i]
if(thiselm.name.match(/dfile\[]/)) thiselm.checked = !thiselm.checked
}
}
}
alert('完成.')
</script>
<?
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>
<script language='javascript'>('完成.')</script>"
endif
?>
</form>
</body>
</html>
