php目录文件在线解压缩程序-PHP源码-PHP中文网

本文章提供一款完整的php目录文件在线解压缩程序，他可打包指定目录并且把目录下所有目录与文件名都打包好，按rar的方式打包，目录结构不变，同时也提供解压功能。

$fz = new fmzip;
$fz->setzipname("打包文件名");

#打包/压缩
$fz->setsource("待打包目录");
$fz->compress($silent,$compress);

#解包/解压
$fz->settarget("待解包目录");
$fz->uncompress($silent);
*/
class fmzip
{

var $source; //压缩源
var $target; //解压目的文件夹
var $zipname;//压缩文件名
var $handle; //打开压缩文件的句柄
var $silent; //是否输出
var $count_dir; //计数器_文件夹
var $count_file;//计数器_文件
var $dirlist;

function setsource($source)//设置压缩源
{
if(!file_exists($source))
die("source does not exist.");
$this->source = $source;
}

function settarget($target)//设置解压目的文件夹
{
if(!file_exists($target))
    $this->makedir($target);
chdir(dirname($_server['script_filename']));
if(substr($target,-1)=="/")
    $target = substr($target,0,strlen($target)-1);
if(!file_exists($target))
{
    die("target does not exist.");
}
$this->target = $target;
}

function setzipname($zipname)//设置压缩文件名
{
if(empty($zipname)) $zipname = "fmzip.fz";
$this->zipname = $zipname;
}

function compress($silent = false, $compress = true) //压缩
{
$this->silent = $silent;
if($silent===false)echo "

compressing...rn";<br />
  if(is_file("$this->zipname"))unlink("$this->zipname");<br />
  $this->handle = fopen($this->zipname,"w");//创建压缩文件<br />
  if($this->handle == null) die("error creating $this->zipname");//打开失败<br />
  $this->count_dir = 0; $this->count_file = 0; //初始化计数器<br />
  $this->merge($this->source);//压缩<br />
  fwrite($this->handle,"-1");//结束标志<br />
  fclose($this->handle);//关闭文件<br />
  echo "rndirectory: $this->count_dir";<br />
  echo "rnfile: $this->count_filern";<br />
  if(function_exists("gzcompress") && $compress==true)<br />
  {<br />
    file_put_contents("$this->zipname.gz",gzcompress(file_get_contents("$this->zipname")));<br />
    unlink("$this->zipname");<br />
  }<br />
  if($silent===false)<br />
  {<br />
    echo $this->listfile();<br />
    echo "

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";
}
}

function listfile()
{
if(file_exists("$this->zipname.gz"))
return "download $this->zipname.gz";
if(file_exists("$this->zipname"))
return "download $this->zipname";
}

function file_info($file)
{
$perm = substr(sprintf('%o',fileperms($file)), -3); //权限
$filename = str_replace($this->source,"",$file);
if(is_file($file))//文件
{
    $size = filesize($file); //文件大小
    return "1rn$filenamern$permrn$sizern".file_get_contents($file)."rn";// .文件内容
}
if(is_dir($file))//目录
    return "0rn$filenamern$permrn";
}//end function file_info

function uncompress($silent = false)
{
$this->silent = $silent;
if($silent===false)echo "

uncompressing...rn";<br />
  if(substr($this->zipname,-3)==".gz")<br />
    $this->zipname = substr($this->zipname,0,strlen($this->zipname)-3);<br />
  if(file_exists("$this->zipname.gz"))<br />
  {<br />
    if(!function_exists(gzuncompress))<br />
      die("function gzuncompress is not supported. unable to continue.");<br />
    file_put_contents($this->zipname,gzuncompress(file_get_contents("$this->zipname.gz")));<br />
  }<br />
  $this->handle = fopen($this->zipname,"r");<br />
  if($this->handle == null) die("error reading $this->zipname");//打开失败<br />
  $count = 0;<br />
  while(1)<br />
  {<br />
    $count ++;<br />
    $type = $this->read_line(); //读取类型<br />
    if($type === "-1")break;//处理完毕,退出<br />
    $filename = $this->target.$this->read_line();//读取文件名<br />
    $permission = $this->read_line();//读取权限<br />
/* <文件夹> [0]n[file_name]n[perm]n */<br />
    if($type === "0")//目录<br />
    {<br />
      if($this->silent === false)//输出提示<br />
        echo "[dir] $filename  [$permission]rn";<br />
      $this->makedir($filename);//创建文件夹<br />
      chdir(dirname($_server['script_filename']));<br />
      chmod($filename,$permission);<br />
      $this->dirlist[$filename] = 1;<br />
      continue;<br />
    }<br />
/* <文件> [1]n[file_name]n[perm]n[size]n[contents]n */<br />
    if($type === "1")//文件<br />
    {<br />
      $this->count_file++;<br />
      $size = $this->read_line(); //读取文件大小<br />
      if($this->silent === false)//输出提示<br />
        echo "[file] $filename  [$permission] [size = $size]rn";<br />
      if($size!=0)<br />
      {<br />
        $fp = fopen($filename,"w");<br />
        $contents = fread($this->handle,$size);<br />
        fwrite($fp,$contents);<br />
        fclose($fp);<br />
        chmod($filename,$permission);<br />
      }<br />
      $this->read_line();//内容后的一个回车<br />
      continue;<br />
    }<br />
  }<br />
  $this->count_dir = count($this->dirlist);<br />
  if($silent===false)<br />
    echo "ndirectory: $this->count_dir";<br />
    echo "nfile: $this->count_filen

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n";
fclose($this->handle);
if(file_exists("$this->zipname.gz"))unlink("$this->zipname");
}//end function uncompress;

function read_line()
{
$a = fgets($this->handle);
$a = str_replace("rn","",$a);
$a = str_replace("n","",$a);
return $a;
}

function makedir($full)
{
list($a,$b) = split("/",$full,2);
if($a == "") return;
if(file_exists($a)&&!is_dir($a))die("can't create dir $a");
if(!file_exists($a))@mkdir($a);
chdir($a);
if($b!=="")
$this->makedir($b);
chdir("..");
}//end function makedir

} //end class fmzip

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