php打包网站并在线压缩为zip_php技巧

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





  

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。
'. 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.'; ?>

验证密码:

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)

> 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 = "\x50\x4b\x03\x04"; $datastr .= "\x14\x00"; // ver needed to extract $datastr .= "\x00\x00"; // gen purpose bit flag $datastr .= "\x08\x00"; // 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 = "\x50\x4b\x01\x02"; $dirstr .= "\x00\x00"; // version made by $dirstr .= "\x14\x00"; // version needed to extract $dirstr .= "\x00\x00"; // gen purpose bit flag $dirstr .= "\x08\x00"; // 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 = "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00"; $datastr .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($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 = "\x50\x4b\x01\x02\x00\x00\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00"; $dirstr .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($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 = "\x50\x4b\x05\x06\x00\x00\x00\x00" . pack('v', $this -> file_count) . pack('v', $this -> file_count) . pack('V', $this -> dirstr_len) . pack('V', $this -> datastr_len) . "\x00\x00"; fwrite($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;$key=pow(2,10*$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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