var EMAIL_DATE = "D, d M Y H:i:s O";
      var LOGIN_INVALID = "0";
      var LOGIN_SUCCESS = "1";
      var LOGOUT_NO_LOGIN = "0";
      var LOGOUT_SUCCESS = "1";
      var DB_ERR = "0";
      var NO_LOGIN = "1";
      var INVALID_USER = "2";
      var SIGNUP_SUCCESS = "3";
      var SIGNUP_USER_EXISTS = "4";
      var SIGNUP_MAIL_ERR = "5";
      var SIGNUP_BAD_DATA = "6";
      var SIGNUP_ERROR = "7";
      var EDIT_PROFILE_NO_UPDATE = "3";
      var EDIT_PROFILE_SUCCESS = "4";
      var PLAN_NO_ACTIVE = "3";
      var PLAN_INVALID_PLAN = "4";
      var PLAN_ALREADY_MARKED = "5";
      var PLAN_INVALID_USER_PLAN = "6";
      var PLAN_NO_USER_PLANS = "7";
      var PLAN_HAS_ACTIVE = "8";
      var PLAN_MARK_SUCCESS = "9";
      var PLAN_ACTIVATE_SUCCESS = "10";
      var PLAN_FETCH_SUCCESS = "11";
      var PLAN_DEL_SUCCESS = "12";
      var PLAN_COMPLETE_SUCCESS = "13";
      var PLAN_NOT_READY_2_COMPLETE = "14";
      var PLAN_FETCH_SUCCESS_NO_LOGIN = "15";
      var PLAN_MAIL_ERR = "16";
      var CANCEL_ACCT_SUCCESS = "3";
      var FORGOT_PWD_SUCCESS = "3";
      var FORGOT_PWD_MAIL_ERR = "4";