The meaning of "what happened" in Urdu is "کیا ہوا" as written in Urdu script, or "Kya hua" as written in Roman Urdu. It can be used in both formal and informal contexts. Additionally, "what happened to you" in Urdu is "کیا ہوا تمھیں" as written in Urdu script, or "Kya hua tumhen" as written in Roman Urdu. These phrases are commonly used in conversations to inquire about someones well-being or to ask for an explanation of a situation.