"; foreach ($data as $key => $val) { if (is_numeric($val)) { $xml .= "<" . $key . ">" . $val . ""; } else { $xml .= "<" . $key . ">"; } } $xml .= ""; return $xml; } /** * @param $xml * @return mixed */ public static function toArray($xml) { if (!is_null($json = json_decode($xml, TRUE))) { return $json; } if (is_array($json)) { return $json; } $data = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA); return json_decode(json_encode($data), TRUE); } /** * @param int $length * @return string * * 随机字符串 */ public static function random($length = 20) { $res = []; $str = 'abcdefghijklmnopqrstuvwxyz'; $str .= strtoupper($str) . '1234567890'; for ($i = 0; $i < $length; $i++) { $rand = substr($str, rand(0, strlen($str) - 2), 1); if (empty($rand)) { $rand = substr($str, strlen($str) - 3, 1); } array_push($res, $rand); } return implode($res); } /** * @param array $array * @param $key * @param $type * @return string */ public static function sign(array $array, $key, $type) { ksort($array, SORT_STRING); $string = ''; foreach ($array as $key => $val) { if (empty($string)) { $string = $key . '=' . $val; } else { $string .= '&' . $key . '=' . $val; } } $string .= '&key=' . $key; if ($type == 'MD5') { return strtoupper(md5($string)); } else { return hash('sha256', $string); } } }