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<?php
/**
* @see https://github.com/zendframework/zend-mail for the canonical source repository
* @copyright Copyright (c) 2005-2018 Zend Technologies USA Inc. (https://www.zend.com)
* @license https://github.com/zendframework/zend-mail/blob/master/LICENSE.md New BSD License
*/
namespace Zend\Mail\Header;
interface HeaderInterface
{
/**
* Format value in Mime-Encoding if not US-ASCII encoding is used
*
* @var bool
*/
const FORMAT_ENCODED = true;
/**
* Return value with the interval ZF2 value (UTF-8 non-encoded)
*
* @var bool
*/
const FORMAT_RAW = false;
/**
* Factory to generate a header object from a string
*
* @param string $headerLine
* @return static
* @throws Exception\InvalidArgumentException If the header does not match with RFC 2822 definition.
* @see http://tools.ietf.org/html/rfc2822#section-2.2
*/
public static function fromString($headerLine);
/**
* Retrieve header name
*
* @return string
*/
public function getFieldName();
/**
* Retrieve header value
*
* @param bool $format Return the value in Mime::Encoded or in Raw format
* @return string
*/
public function getFieldValue($format = HeaderInterface::FORMAT_RAW);
/**
* Set header encoding
*
* @param string $encoding
* @return $this
*/
public function setEncoding($encoding);
/**
* Get header encoding
*
* @return string
*/
public function getEncoding();
/**
* Cast to string
*
* Returns in form of "NAME: VALUE"
*
* @return string
*/
public function toString();
}