本文实例介绍了php打包网站并在线压缩为zip的方法，分享给大家供大家参考，具体内容如下

<?php
//在URL后参加 ?pwd=密码 查看生成密码
$password = '8baa717e6265d1c1d762cc896151f821'; //l23
?>



  



 

 

在线压缩ZIP文件程序

 

   
使用方法:选定要压缩的文件或目录（包含子目录），即可开始压缩。压缩的结果保留原来的目录结构。

   <?php if(isset($_REQUEST['pwd']) && md5($_REQUEST['pwd']) == $password)
   echo '当前目录：'. dirname(__FILE__) . '退出';
     else
      if(isset($_GET['pwd']) )
        echo '密码值：'. md5($_GET['pwd']) . '';
      else
        echo 'Tips:在URL后参加?pwd=密码 查看生成密码.';
    ?>
   

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

  

   
验证密码: 
   

  
  

   

   

  
 
 
<?
 
elseif($_REQUEST["myaction"]=="dolist"):
 
  if(!isset($_REQUEST['pwd']) || empty($_REQUEST['pwd']) )
    die('请输入密码! Again');
  if(md5($_REQUEST['pwd']) != $password)
    die('输入的密码不正确！Again');
echo '选择要排除的目录(相对路径，以英文半角逗号分隔):
';
echo '
';
  echo "选择要压缩的文件或目录：
";
   $fdir = opendir('./');
  while($file=readdir($fdir)){
    if($file=='.'|| $file=='..' ) continue;
    echo " ";
    if(is_file($file)){
      echo "文件: $file
";
    }else{
      echo "目录: $file
";
    }
  }
?>

压缩文件保存到目录:

(留空为本目录,必须有写入权限)

压缩文件名称:

(.zip)







<?
 
elseif($_REQUEST["myaction"]=="dozip"):
 
// set_time_limit(0);
 
 class PHPzip{
 
  var $file_count = 0 ;
  var $datastr_len  = 0;
  var $dirstr_len = 0;
  var $filedata = ''; //该变量只被类外部程序访问
  var $gzfilename;
  var $fp;
  var $dirstr='';
  /*
  返回文件的修改时间格式.
  只为本类内部函数调用.
  */
  function unix2DosTime($unixtime = 0) {
    $timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);
 
    if ($timearray['year'] < 1980) {
      $timearray['year']  = 1980;
      $timearray['mon']   = 1;
      $timearray['mday']  = 1;
      $timearray['hours']  = 0;
      $timearray['minutes'] = 0;
      $timearray['seconds'] = 0;
    }
 
    return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) |
        ($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1);
  }
 
  /*
  初始化文件,建立文件目录,
  并返回文件的写入权限.
  */
  function startfile($path = 'myzip.zip'){
    $this->gzfilename=$path;
    $mypathdir=array();
    do{
      $mypathdir[] = $path = dirname($path);
    }while($path != '.');
    @end($mypathdir);
    do{
      $path = @current($mypathdir);
      @mkdir($path);
    }while(@prev($mypathdir));
 
    if($this->fp=@fopen($this->gzfilename,"w")){
      return true;
    }
    return false;
  }
 
  /*
  添加一个文件到 zip 压缩包中.
  */
  function addfile($data, $name){
    $name   = str_replace('', '/', $name);
 
    if(strrchr($name,'/')=='/') return $this->adddir($name);
 
    $dtime  = dechex($this->unix2DosTime());
    $hexdtime = 'x' . $dtime[6] . $dtime[7]
         . 'x' . $dtime[4] . $dtime[5]
         . 'x' . $dtime[2] . $dtime[3]
         . 'x' . $dtime[0] . $dtime[1];
    eval('$hexdtime = "' . $hexdtime . '";');
 
    $unc_len = strlen($data);
    $crc   = crc32($data);
    $zdata  = gzcompress($data);
    $c_len  = strlen($zdata);
    $zdata  = substr(substr($zdata, 0, strlen($zdata) - 4), 2);
 
    //新添文件内容格式化:
    $datastr = "x50x4bx03x04";
    $datastr .= "x14x00";      // ver needed to extract
    $datastr .= "x00x00";      // gen purpose bit flag
    $datastr .= "x08x00";      // compression method
    $datastr .= $hexdtime;       // last mod time and date
    $datastr .= pack('V', $crc);       // crc32
    $datastr .= pack('V', $c_len);      // compressed filesize
    $datastr .= pack('V', $unc_len);     // uncompressed filesize
    $datastr .= pack('v', strlen($name));  // length of filename
    $datastr .= pack('v', 0);        // extra field length
    $datastr .= $name;
    $datastr .= $zdata;
    $datastr .= pack('V', $crc);         // crc32
    $datastr .= pack('V', $c_len);        // compressed filesize
    $datastr .= pack('V', $unc_len);       // uncompressed filesize
 
 
    fwrite($this->fp,$datastr);  //写入新的文件内容
    $my_datastr_len = strlen($datastr);
    unset($datastr);
 
    //新添文件目录信息
    $dirstr = "x50x4bx01x02";
    $dirstr .= "x00x00";          // version made by
    $dirstr .= "x14x00";          // version needed to extract
    $dirstr .= "x00x00";          // gen purpose bit flag
    $dirstr .= "x08x00";          // compression method
    $dirstr .= $hexdtime;           // last mod time & date
    $dirstr .= pack('V', $crc);        // crc32
    $dirstr .= pack('V', $c_len);       // compressed filesize
    $dirstr .= pack('V', $unc_len);      // uncompressed filesize
    $dirstr .= pack('v', strlen($name) );   // length of filename
    $dirstr .= pack('v', 0 );         // extra field length
    $dirstr .= pack('v', 0 );         // file comment length
    $dirstr .= pack('v', 0 );         // disk number start
    $dirstr .= pack('v', 0 );         // internal file attributes
    $dirstr .= pack('V', 32 );        // external file attributes - 'archive' bit set
    $dirstr .= pack('V',$this->datastr_len ); // relative offset of local header
    $dirstr .= $name;
 
    $this->dirstr .= $dirstr;  //目录信息
 
    $this -> file_count ++;
    $this -> dirstr_len += strlen($dirstr);
    $this -> datastr_len += $my_datastr_len;
  }
 
  function adddir($name){
    $name = str_replace("", "/", $name);
    $datastr = "x50x4bx03x04x0ax00x00x00x00x00x00x00x00x00";
 
    $datastr .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) );
    $datastr .= pack("v", 0 ).$name.pack("V", 0).pack("V", 0).pack("V", 0);
 
    fwrite($this->fp,$datastr);  //写入新的文件内容
    $my_datastr_len = strlen($datastr);
    unset($datastr);
 
    $dirstr = "x50x4bx01x02x00x00x0ax00x00x00x00x00x00x00x00x00";
    $dirstr .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) );
    $dirstr .= pack("v", 0 ).pack("v", 0 ).pack("v", 0 ).pack("v", 0 );
    $dirstr .= pack("V", 16 ).pack("V",$this->datastr_len).$name;
 
    $this->dirstr .= $dirstr;  //目录信息
 
    $this -> file_count ++;
    $this -> dirstr_len += strlen($dirstr);
    $this -> datastr_len += $my_datastr_len;
  }
 
 
  function createfile(){
    //压缩包结束信息,包括文件总数,目录信息读取指针位置等信息
    $endstr = "x50x4bx05x06x00x00x00x00" .
          pack('v', $this -> file_count) .
          pack('v', $this -> file_count) .
          pack('V', $this -> dirstr_len) .
          pack('V', $this -> datastr_len) .
          "x00x00";
 
    fwrite($this->fp,$this->dirstr.$endstr);
    fclose($this->fp);
  }
 }
 
 
  if(!trim($_REQUEST['zipname']))
    $_REQUEST['zipname'] = 'backup_'.substr(md5(__FILE__),0,8). '.zip';
  else
    $_REQUEST['zipname'] = trim($_REQUEST['zipname']);
  if(!strrchr(strtolower($_REQUEST['zipname']),'.')=='.zip')
    $_REQUEST['zipname'] .= ".zip";
  $_REQUEST['todir'] = str_replace('','/',trim($_REQUEST['todir']));
  if(!strrchr(strtolower($_REQUEST['todir']),'/')=='/')
    $_REQUEST['todir'] .= "/";
  if($_REQUEST['todir']=="/")
    $_REQUEST['todir'] = "./";
 
  function listfiles($dir="."){
    global $faisunZIP;
    $sub_file_num = 0;
 
    if(is_file($dir)){
     if(realpath($faisunZIP->gzfilename)!=realpath($dir)){
      $faisunZIP -> addfile(implode('',file($dir)),$dir);
      return 1;
     }
      return 0;
    }
 
    $handle=opendir($dir);
    //添加排除
    $to_exlude = !empty($_POST['toexlude']) ? $_POST['toexlude'] :'';
    $exlude = empty($to_exlude) ? array() : explode(',',$to_exlude);
    while ($file = readdir($handle)) {
      if($file=="."||$file==".." || $file == 'wp-content' )continue;
      if(is_dir("$dir/$file") && !in_array("$dir/$file",$exlude) )
      {
       $sub_file_num += listfiles("$dir/$file");
      }
      else {
         if(realpath($faisunZIP ->gzfilename)!=realpath("$dir/$file")){
         $faisunZIP -> addfile(implode('',file("$dir/$file")),"$dir/$file");
         $sub_file_num ++;
        }
      }
    }
    closedir($handle);
    if(!$sub_file_num) $faisunZIP -> addfile("","$dir/");
    return $sub_file_num;
  }
 
  function num_bitunit($num){
   $bitunit=array(' B',' KB',' MB',' GB');
   for($key=0;$key<count($bitunit);$key++){
    if($num>=pow(2,10*$key)-1){ //1023B 会显示为 1KB
     $num_bitunit_str=(ceil($num/pow(2,10*$key)*100)/100)." $bitunit[$key]";
    }
   }
   return $num_bitunit_str;
  }
 
  if(is_array($_REQUEST['dfile'])){
    $faisunZIP = new PHPzip;
    if($faisunZIP -> startfile($_REQUEST['todir'].$_REQUEST['zipname'])){
      echo "正在添加压缩文件...
";
      $filenum = 0;
      foreach($_REQUEST['dfile'] as $file){
        if(is_file($file)){
          echo "文件: $file 
";
        }else{
          echo "目录: $file 
";
        }
        $filenum += listfiles($file);
      }
      $faisunZIP -> createfile();
      echo "
压缩完成,共添加 $filenum 个文件.
". $_REQUEST['todir'].$_REQUEST['zipname']." (".num_bitunit(filesize("$_REQUEST[todir]$_REQUEST[zipname]")).")";
    }else{
      echo $_REQUEST['todir'].$_REQUEST['zipname'].'不能写入,请检查路径或权限是否正确.
';
    }
  }else{
    echo "没有选择的文件或目录.
";
  }
 
 
endif;
 
?>
 
 

 
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