Does a conditional divorce pronounced before the marriage contract take effect, and what is its impact on a divorce pronounced after marriage using the same formula?

Divorce is not valid before the marriage contract, based on the Prophet's (peace and blessings be upon him) saying: "Divorce is for him who grasps the shins," and "There is no divorce before marriage." Therefore, what is issued before the marriage contract is not taken into consideration and is not counted as a divorce.