input->xss_clean($str, $charset); } } // -------------------------------------------------------------------- /** * Hash encode a string * * @access public * @param string * @return string */ if (! function_exists('dohash')) { function dohash($str, $type = 'sha1') { if ($type == 'sha1') { if (! function_exists('sha1')) { if (! function_exists('mhash')) { require_once(BASEPATH.'libraries/Sha1'.EXT); $SH = new CI_SHA; return $SH->generate($str); } else { return bin2hex(mhash(MHASH_SHA1, $str)); } } else { return sha1($str); } } else { return md5($str); } } } // ------------------------------------------------------------------------ /** * Strip Image Tags * * @access public * @param string * @return string */ if (! function_exists('strip_image_tags')) { function strip_image_tags($str) { $str = preg_replace("##", "\\1", $str); $str = preg_replace("##", "\\1", $str); return $str; } } // ------------------------------------------------------------------------ /** * Convert PHP tags to entities * * @access public * @param string * @return string */ if (! function_exists('encode_php_tags')) { function encode_php_tags($str) { return str_replace(array(''), array('<?php', '<?PHP', '<?', '?>'), $str); } }