/** * @param string $sEncodedValue * @param string $sIncomingCharset = '' * @param string $sForcedIncomingCharset = '' * * @return string */ public static function DecodeHeaderValue($sEncodedValue, $sIncomingCharset = '', $sForcedIncomingCharset = '') { $sValue = $sEncodedValue; if (0 < \strlen($sIncomingCharset)) { $sIncomingCharset = \MailSo\Base\Utils::NormalizeCharsetByValue($sIncomingCharset, $sValue); $sValue = \MailSo\Base\Utils::ConvertEncoding($sValue, $sIncomingCharset, \MailSo\Base\Enumerations\Charset::UTF_8); } $sValue = \preg_replace('/\\?=[\\n\\r\\t\\s]{1,5}=\\?/m', '?==?', $sValue); $sValue = \preg_replace('/[\\r\\n\\t]+/m', ' ', $sValue); $aEncodeArray = array(''); $aMatch = array(); \preg_match_all('/=\\?[^\\?]+\\?[q|b|Q|B]\\?[^\\?]*(\\?=)/', $sValue, $aMatch); if (isset($aMatch[0]) && \is_array($aMatch[0])) { for ($iIndex = 0, $iLen = \count($aMatch[0]); $iIndex < $iLen; $iIndex++) { if (isset($aMatch[0][$iIndex])) { $iPos = @\strpos($aMatch[0][$iIndex], '*'); if (false !== $iPos) { $aMatch[0][$iIndex][0] = \substr($aMatch[0][$iIndex][0], 0, $iPos); } } } $aEncodeArray = $aMatch[0]; } $aParts = array(); $sMainCharset = ''; $bOneCharset = true; for ($iIndex = 0, $iLen = \count($aEncodeArray); $iIndex < $iLen; $iIndex++) { $aTempArr = array('', $aEncodeArray[$iIndex]); if ('=?' === \substr(\trim($aTempArr[1]), 0, 2)) { $iPos = \strpos($aTempArr[1], '?', 2); $aTempArr[0] = \substr($aTempArr[1], 2, $iPos - 2); $sEncType = \strtoupper($aTempArr[1][$iPos + 1]); switch ($sEncType) { case 'Q': $sHeaderValuePart = \str_replace('_', ' ', $aTempArr[1]); $aTempArr[1] = \quoted_printable_decode(\substr($sHeaderValuePart, $iPos + 3, \strlen($sHeaderValuePart) - $iPos - 5)); break; case 'B': $sHeaderValuePart = $aTempArr[1]; $aTempArr[1] = \MailSo\Base\Utils::Base64Decode(\substr($sHeaderValuePart, $iPos + 3, \strlen($sHeaderValuePart) - $iPos - 5)); break; } } if (0 < \strlen($aTempArr[0])) { $sCharset = 0 === \strlen($sForcedIncomingCharset) ? $aTempArr[0] : $sForcedIncomingCharset; $sCharset = \MailSo\Base\Utils::NormalizeCharset($sCharset, true); if ('' === $sMainCharset) { $sMainCharset = $sCharset; } else { if ($sMainCharset !== $sCharset) { $bOneCharset = false; } } } $aParts[] = array($aEncodeArray[$iIndex], $aTempArr[1], $sCharset); unset($aTempArr); } for ($iIndex = 0, $iLen = \count($aParts); $iIndex < $iLen; $iIndex++) { if ($bOneCharset) { $sValue = \str_replace($aParts[$iIndex][0], $aParts[$iIndex][1], $sValue); } else { $aParts[$iIndex][2] = \MailSo\Base\Utils::NormalizeCharsetByValue($aParts[$iIndex][2], $aParts[$iIndex][1]); $sValue = \str_replace($aParts[$iIndex][0], \MailSo\Base\Utils::ConvertEncoding($aParts[$iIndex][1], $aParts[$iIndex][2], \MailSo\Base\Enumerations\Charset::UTF_8), $sValue); } } if ($bOneCharset && 0 < \strlen($sMainCharset)) { $sMainCharset = \MailSo\Base\Utils::NormalizeCharsetByValue($sMainCharset, $sValue); $sValue = \MailSo\Base\Utils::ConvertEncoding($sValue, $sMainCharset, \MailSo\Base\Enumerations\Charset::UTF_8); } return $sValue; }