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PHP网站备份程序

<html>
<head>
<meta http-equiv=”Content-Type” content=”text/html; charset=gb2312″>
<title>网站程序备份</title>
</head>
<body>
<form name=”myform” method=”post” action=””>
<?php
error_reporting(E_ALL & ~E_NOTICE);
ini_set(‘memory_limit’, ‘2048M’);
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($file))
{
echo “<font face=\”wingdings\” size=\”5\”>2</font>&nbsp;&nbsp;$file<br>”;
}
else
{
echo “<font face=\”wingdings\” size=\”5\”>0</font>&nbsp;$file<br>”;
}
}
?>
<br>
包含下列文件类型:
<input name=”file_type” type=”text” id=”file_type” value=”” size=”50″>
<font color=”red”>
(文件类型用”|”隔开,默认空则包含任意文件,例:如果需要打包php和jpg文件,则输入”php|jpg”)
</font>
<br>
压缩文件保存到目录:
<input name=”todir” type=”text” id=”todir” value=”__dwb2011__” size=”15″>
<font color=”red”>
(留空为本目录,必须有写入权限)
</font>
<br>
压缩文件名称:
<input name=”zipname” type=”text” id=”zipname” value=”dwb2011.zip” size=”15″>
<font color=”red”>
(.zip)
</font>
<br>
<br>
<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[i];
if(thiselm.name.match(/dfile\[]/))
thiselm.checked = !thiselm.checked;
}
}
}
</script>

<?php
error_reporting(E_ALL & ~E_NOTICE);
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=”;
var $filefilters = array();

function SetFileFilter($filetype)
{
$this->filefilters = explode(‘|’,$filetype);
}

//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 = ‘dodo.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);
if(!empty($this->filefilters))
{
if (!in_array(end(explode(“.”,$name)), $this->filefilters))
{
return;
}
}
$dtime = dechex($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] = “dodozip.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 $dodozip;
$sub_file_num = 0;
if(is_file(“$dir”))
{
if(realpath($dodozip ->gzfilename)!=realpath(“$dir”))
{
$dodozip -> addfile(implode(”,file(“$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/$file”);
}
else
{
if(realpath($dodozip ->gzfilename)!=realpath(“$dir/$file”))
{
$dodozip -> addfile(implode(”,file(“$dir/$file”)),”$dir/$file”);
$sub_file_num ++;
}
}
}

closedir($handle);

if(!$sub_file_num)
$dodozip -> addfile(“”,”$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]))
{
$dodozip = new PHPzip;
if($_REQUEST[“file_type”] != NULL)
$dodozip -> SetFileFilter($_REQUEST[“file_type”]);
if($dodozip -> startfile(“$_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))
{
if(!empty($dodozip -> filefilters))
if (!in_array(end(explode(“.”,$file)), $dodozip -> filefilters))
continue;
echo “<font face=\”wingdings\” size=\”5\”>2</font>&nbsp;&nbsp;$file<br>”;
}
else
{
echo “<font face=\”wingdings\” size=\”5\”>0</font>&nbsp;$file<br>”;
}
$filenum += listfiles($file);
}
$dodozip -> createfile();

echo “<br>压缩完成,共添加 $filenum 个文件.<br><a href=’$_REQUEST[todir]$_REQUEST[zipname]’ _fcksavedurl=’$_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>”;
}
}
?>
</form>
</body>
</html>

分类:PHP 标签:, ,
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