``` //将数组转成uri字符串 function formatBizQueryParaMap($paraMap, $urlencode) { $buff = ""; ksort($paraMap); foreach ($paraMap as $k => $v) { if($urlencode) { $v = urlencode($v); } $buff .= strtolower($k) . "=" . $v . "&"; } $reqPar; if (strlen($buff) > 0) { $reqPar = substr($buff, 0, strlen($buff)-1); } return $reqPar; } ```