“lex fori” is a legal terms a specific concept of private international law that in which court and how the the case will run. It use in the conflict of laws where the jurisdiction or any law related conflict come out form a case. It is a Latin word which means law of the forum/country.
For Example: (According to Evidence Act)
If a contract is signed in the UK or the cause of action arose in the UK or any other but the suit filed in bangladesh because the jurisdiction close or both party agreed so, all evidencial matters are to be determined by the law of evidence (BD) not UK or any other county where the cause of action arise. Even a ppiece of evidence is received from abroad is admissible or not will determined by Bangladesh Court