zip_open Open a ZIP file archive &reftitle.description; mixedzip_open stringfilename Opens a new zip archive for reading. &reftitle.parameters; filename The file name of the ZIP archive to open. &reftitle.returnvalues; Returns a resource handle for later use with zip_read and zip_close or returns the number of error if filename does not exist or in case of other error. &reftitle.seealso; zip_read zip_close