PHP在线压缩程序 - 逝去的青春

PHP在线压缩程序

作者：jao 发布于：2012-12-27 22:16 分类：PHP教程

<?php
$password = "backupzip";//验证密码
$zipname = date("Y-m-d") . "_" . substr(md5(time()), 0, 8) . ".zip"; //提前生成文件名
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>PHP在线压缩程序</title>
<style type="text/css">
<!--
body,td{
font-size: 14px;
color: #000000;
}
a {
color: #000066;
text-decoration: none;
}
a:hover {
color: #FF6600;
text-decoration: underline;
}
-->
</style>
</head>
<body>
<form name="myform" method="post" action="<?=$_SERVER[PHP_SELF];?>">
<font color="#FF0000">PHP在线压缩程序 V1.0</font><br>
<div style="color:#FF9900">
<p>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。</p>
<p>压缩的结果保留原来的目录结构。</p>
</div>
<?

if (!$_REQUEST["myaction"])
:
?>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="7%">验证密码: </td>
<td width="92%"><input name="password" type="password" id="password" size="15">
(源文件中设定的密码) </td>
</tr>
<tr>
<td><input name="myaction" type="hidden" id="myaction" value="dolist"></td>
<td><input type="submit" name="Submit" value=" 进 入 "></td>
</tr>
</table>
<?
elseif ($_REQUEST["myaction"] == "dolist") : if ($_REQUEST['password'] != $password)
  die("输入的密码不正确，请重新输入。");
echo "选择要压缩的文件或目录：<br>";
$fdir = opendir('./');
while ($file = readdir($fdir)) {
if ($file == '.' || $file == '..')
  continue;
echo "<input name='dfile[]' type='checkbox' value='$file' " . ($file == basename(__FILE__) ? "" : "checked") . "> ";
if (is_file($file)) {
  echo "文件: $file<br>";
} else {
  echo "目录: $file<br>";
}
}
?>
<br>
压缩文件保存到目录:
<input name="todir" type="text" id="todir" value="backup" size="15">
(留空为本目录,必须有写入权限)<br>
压缩文件名称:
<input name="zipname" type="text" id="zipname" value="<? echo $zipname;?>" size="15" style="width:170px;">
(.zip)<br>
<br>
<input name="password" type="hidden" id="password" value="<?=$_POST['password'];?>">
<input name="myaction" type="hidden" id="myaction" value="dozip">
<input type='button' value='反选' onclick='selrev();'>
<input type="submit" name="Submit" value=" 开始压缩 ">
<script language='javascript'>
function selrev() {
with(document.myform) {
for(i=0;i<elements.length;i++) {
thiselm = elements;
if(thiselm.name.match(/dfile\[]/))    thiselm.checked = !thiselm.checked;
}
}
}
</script>
<?

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 = 'faisun.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] = "faisunzip.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");
while ($file = readdir($handle)) {
  if ($file == "." || $file == "..")
   continue;
  if (is_dir("$dir/$file")) {
   $sub_file_num += listfiles("$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...<br><br>";
  $filenum = 0;
  foreach ($_REQUEST[dfile] as $file) {
   if (is_file($file)) {
    echo "文件: $file<br>";
   } else {
    echo "目录: $file<br>";
   }
   $filenum += listfiles($file);
  }
  $faisunZIP->createfile();
  echo "<br>压缩完成,共添加 $filenum 个文件.<br><a href='$_REQUEST[todir]$_REQUEST[zipname]'>$_REQUEST[todir]$_REQUEST[zipname] (" . num_bitunit(filesize("$_REQUEST[todir]$_REQUEST[zipname]")) . ")</a>";
} else {
  echo "$_REQUEST[todir]$_REQUEST[zipname] 不能写入,请检查路径或权限是否正确.<br>";
}
} else {
echo "没有选择的文件或目录.<br>";
}
endif;
?>
</form>
</body>
</html>

标签: php教程 PHP 在线压缩

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