(PHP 5 >= 5.6.0, PECL zip >= 1.12.4)
ZipArchive::setExternalAttributesIndex — Set the external attributes of an entry defined by its index
$index
   , int $opsys
   , int $attr
   [, int $flags
  ] )Set the external attributes of an entry defined by its index.
indexIndex of the entry.
opsysThe operating system code defined by one of the ZipArchive::OPSYS_ constants.
attrThe external attributes. Value depends on operating system.
flagsOptional flags. Currently unused.
   Returns TRUE on success or FALSE on failure.