Description:
------------
I am experiencing some problems with ZipArchive, using PHP 5.2.8, with php_zip supplied with this distribution. I am trying to archive couple of folders and files using ZipArchive.

If i am replacing php_zip.dll with php_zip.dll from PHP 5.2.6 it works without problems.

Testing same code using a PHP 5.2.7 installation (with php_zip.dll of 5.2.7) crashes archive also (see Expected Results section).

Reproduce code:
---------------
class My_ZipArchive extends ZipArchive
{
	public function addDir($filename, $localname)
	{
 		// Adds a directory recursivelly, keeping the same structure.
		// @param string $filename The path to the file to add.
		// @param string $localname Local name inside ZIP archive.
 		
		if($localname == NULL || empty($localname))
			$localpath = "";
		else
		{
			$localpath = $localname . '/';
			$this->addEmptyDir($localname);
		}
		
		$iter = new DirectoryIterator($filename);
		
		foreach($iter as $file)
		{
			// Only zip real files: no dots, no links.
			if ($file->isDot() || (!$file->isFile() && !$file->isDir())) {
				continue;
			}
	
			$method = $file->isFile() ? 'addFile' : 'addDir';
	
			echo $file->getPathname().' - '.$method.'<br />';
			
			$this->$method($file->getPathname(),  $localpath.$file->getFilename());
		}
	}
}

			try
			{
				//create output archive
				$zip = new My_ZipArchive();
				
				$zip->open( 'archive.zip', ZIPARCHIVE::CREATE);
	
				$zip->addDir( 'd:\_Work\test\output', '');
				
				$result = $zip->close();
				//finish create output archive
			}
			catch(Exception $e) {
    			echo 'Caught exception: ',  $e->getMessage(), "\n";
 			}
			
			exit($result.'finished');

Expected result:
----------------
This code should make a zip with my files.

Actual result:
--------------
If i have 3 .php files to add them to zip i got a corrupted archive. 

If i remove one of them i got a good zip archive.

If i am opening corrupted archive with a zip utility archive doesn't seems to have any files within or is reported directly as corrupted. If i am using a repair tool i got a working archive.