<?php
namespace PhpZip\Extra;
/**
* Extra Field in a Local or Central Header of a ZIP archive.
* It defines the common properties of all Extra Fields and how to
* serialize/deserialize them to/from byte arrays.
*
* @author Ne-Lexa [email protected]
* @license MIT
*/
interface ExtraField
{
/**
* Returns the Header ID (type) of this Extra Field.
* The Header ID is an unsigned short integer (two bytes)
* which must be constant during the life cycle of this object.
*
* @return int
*/
public static function getHeaderId();
/**
* Serializes a Data Block.
* @return string
*/
public function serialize();
/**
* Initializes this Extra Field by deserializing a Data Block.
* @param string $data
*/
public function deserialize($data);
}