I want to add a script to a website to backup the files.

So I'd like to compress all the files of the website in one zip archiv
for the user to download.

Problem is, exec is disabled for security reasons.

Is there any way to create *any* kind of single archive for my website
using php without exec? It does not need to be zip, any single file
would do nicely.

Thanks,
Sam

"Sam Jost" <radeldudel [at] gmail.com> wrote in message
news:1175979197.336542.15970 [at] n76g2000hsh.googlegroups.com...
>I want to add a script to a website to backup the files.
>
> So I'd like to compress all the files of the website in one zip archiv
> for the user to download.
>
> Problem is, exec is disabled for security reasons.
>
> Is there any way to create *any* kind of single archive for my website
> using php without exec? It does not need to be zip, any single file
> would do nicely.

http://www.phpclasses.org/browse/class/42.html

-Lost

"Sam Jost" <radeldudel [at] gmail.com> wrote in message
news:1175979197.336542.15970 [at] n76g2000hsh.googlegroups.com...
|I want to add a script to a website to backup the files.
|
| So I'd like to compress all the files of the website in one zip archiv
| for the user to download.
|
| Problem is, exec is disabled for security reasons.
|
| Is there any way to create *any* kind of single archive for my website
| using php without exec? It does not need to be zip, any single file
| would do nicely.

you can use this class with your own function that recurses
directories...here's how you would do a single dir:


$archive = new zipArchive();
$localDirectory = '/path/to/some/dir';
while (($fileName = readdir($localDirectory)) !== false)
{
if ($fileName == '.' || $fileName == '..'){ continue; }
$archive->addFile(basename($fileName), file_get_contents($fileName));
}
file_put_contents($fileName, $archive->getArchive());



and here's the class:


<?
class zipArchive
{
public $zipData = array();
public $archive = array();
public $endOfArchive = "\x50\x4b\x05\x06\x00\x00\x00\x00";
public $oldOffset = 0;

public function addDirectory($directoryName)
{
$directoryName = str_replace('\\', '/', $directoryName);
$header = "\x50\x4b\x03\x04";
$header .= "\x0a\x00";
$header .= "\x00\x00";
$header .= "\x00\x00";
$header .= "\x00\x00\x00\x00";
$header .= pack('V', 0);
$header .= pack('V', 0);
$header .= pack('V', 0);
$header .= pack('v', strlen($directoryName));
$header .= pack('v', 0 );
$header .= $directoryName;
$header .= pack('V', 0);
$header .= pack('V', 0);
$header .= pack('V', 0);
$this->zipData[] = $header;
$newOffset = strlen(implode('', $this->zipData));
$directory = "\x50\x4b\x01\x02";
$directory .= "\x00\x00";
$directory .= "\x0a\x00";
$directory .= "\x00\x00";
$directory .= "\x00\x00";
$directory .= "\x00\x00\x00\x00";
$directory .= pack('V', 0);
$directory .= pack('V', 0);
$directory .= pack('V', 0);
$directory .= pack('v', strlen($directoryName));
$directory .= pack('v', 0 );
$directory .= pack('v', 0 );
$directory .= pack('v', 0 );
$directory .= pack('v', 0 );
$directory .= pack('V', 16 );
$directory .= pack('V', $this->oldOffset);
$directory .= $directoryName;
$this->oldOffset = $newOffset;
$this->archive[] = $directory;
}

public function addFile($fileName, $data)
{
$fileName = str_replace('\\', '/', $fileName);
$header = "\x50\x4b\x03\x04";
$header .= "\x14\x00";
$header .= "\x00\x00";
$header .= "\x08\x00";
$header .= "\x00\x00\x00\x00";
$uncompressedLength = strlen($data);
$compression = crc32($data);
$gZippedData = gzcompress($data);
$gZippedData = substr(substr($gZippedData, 0,
strlen($gZippedData) - 4), 2);
$compressedLength = strlen($gZippedData);
$header .= pack('V', $compression);
$header .= pack('V', $compressedLength);
$header .= pack('V', $uncompressedLength);
$header .= pack('v', strlen($fileName) );
$header .= pack('v', 0 );
$header .= $fileName;
$header .= $gZippedData;
$header .= pack('V', $compression);
$header .= pack('V', $compressedLength);
$header .= pack('V', $uncompressedLength);
$this->zipData[] = $header;
$newOffset = strlen(implode('', $this->zipData));
$fileData = "\x50\x4b\x01\x02";
$fileData .= "\x00\x00";
$fileData .= "\x14\x00";
$fileData .= "\x00\x00";
$fileData .= "\x08\x00";
$fileData .= "\x00\x00\x00\x00";
$fileData .= pack('V', $compression);
$fileData .= pack('V', $compressedLength);
$fileData .= pack('V', $uncompressedLength);
$fileData .= pack('v', strlen($fileName));
$fileData .= pack('v', 0 );
$fileData .= pack('v', 0 );
$fileData .= pack('v', 0 );
$fileData .= pack('v', 0 );
$fileData .= pack('V', 32 );
$fileData .= pack('V', $this->oldOffset);
$fileData .= $fileName;
$this->oldOffset = $newOffset;
$this->archive[] = $fileData;
}

public function getArchive()
{
$data = implode('', $this->zipData);
$controlDirectory = implode('', $this->archive);
return $data .
$controlDirectory .
$this->endOfArchive .
pack('v', sizeof($this->archive)) .
pack('v', sizeof($this->archive)) .
pack('V', strlen($controlDirectory)) .
pack('V', strlen($data)) .
"\x00\x00";
}
}
?>