function ASCII($params = array()){
if(!empty($params)){
$p = ksort($params);
if($p){
$str = '';
foreach ($params as $k=>$val){
$str .= $k .'=' . $val . '&';
}
$strs = rtrim($str, '&');
return $strs;
}
}
return '参数错误';
}
结果：
appid=wxd930ea5d5a258f4f&body=test&device_info=1000&mch_id=10000100&non ce_str=ibuaiVcKdpRxkhJA