<?php
/**
* functions/decode/us_ascii.php
*
* This file contains us-ascii decoding function that is needed to read
* us-ascii encoded mails in non-us-ascii locale.
*
* Function replaces all 8bit symbols with '?' marks
*
* @copyright 2004-2011 The SquirrelMail Project Team
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
* @version $Id: us_ascii.php 14084 2011-01-06 02:44:03Z pdontthink $
* @package squirrelmail
* @subpackage decode
*/
/**
* us-ascii decoding function.
*
* @param string $string string that has to be cleaned
* @return string cleaned string
*/
function charset_decode_us_ascii ($string) {
// don't do decoding when there are no 8bit symbols
if (! sq_is8bit($string,'us-ascii'))
return $string;
$string = preg_replace("/([\201-\237])/e","'?'",$string);
/* I don't want to use 0xA0 (\240) in any ranges. RH73 may dislike it */
$string = str_replace("\240", '?', $string);
$string = preg_replace("/([\241-\377])/e","'?'",$string);
return $string;
}
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