4 	/** The temporary file name of the Zip archive. */
7 	/** Holds the Zip archive builder. */
8 	private $zip;  variable in ArchiveHelperZip
10 	/** Name of the file currently being appended into the ZIP archive. */
13 	/** Content of the file currently being appended into the ZIP archive. */
20 		return "application/zip";
24 	 * Initializes the temporary ZIP archive.
27 		$this->temporaryZipFilename = tempnam(sys_get_temp_dir(), "zip");
28 		$this->zip = new ZipArchive();
29 		$this->zip->open($this->temporaryZipFilename, ZipArchive::OVERWRITE);
33 	 * Starts a new file in the ZIP archive.
51 		$this->zip->addFromString($this->currentFilename, $this->currentContent);
59 		$this->zip->addFromString($filename, $content);
63 	 * Closes the ZIP archive and returns its whole content as a string.
64 	 * @return Content of the ZIP archive.
67 		$this->zip->close();