关于Discuz!中“您当前的访问请求当中含有非法字符，已经被系统

private function _xss_check() {

static $check = array('"', '>', '<', ''', '(', ')', 'CONTENT-TRANSFER-ENCODING');

if(isset($_GET['formhash']) && $_GET['formhash'] !== formhash()) {

system_error('request_tainting');

}

if($_SERVER['REQUEST_METHOD'] == 'GET' ) {

$temp = $_SERVER['REQUEST_URI'];

} elseif(empty ($_GET['formhash'])) {

$temp = $_SERVER['REQUEST_URI'].file_get_contents('php://input');

} else {

$temp = '';

}

if(!empty($temp)) {

$temp = strtoupper(urldecode(urldecode($temp)));

foreach ($check as $str) {

if(strpos($temp, $str) !== false) {

system_error('request_tainting');

}

}

}

return true;

}

private function _xss_check() {

$temp = strtoupper(urldecode(urldecode($_SERVER['REQUEST_URI'])));

if(strpos($temp, '<') !== false || strpos($temp, '"') !== false || strpos($temp, 'CONTENT-TRANSFER-ENCODING') !== false) {

system_error('request_tainting');

}

return true;

}