What problems should php trycatch solve?

I know that php has an exception handling. Baidu once told everyone how to write the syntax. Use the above set as needed. However, I have not found an article to tell you why trycatch is used. what problems does it mean. We can see that it can reduce the code by "if... else"... knowing that php has an exception handling problem. once Baidu goes through it, it will tell you how to write the syntax. Use the above set as needed. However, I have not found an article to tell you why try catch is used. what problems does it mean to solve. We can see that this can reduce the "wild path like if... else" of the code, but we didn't continue to elaborate on it.
Do you know? keep searching for answers and always come back to pay attention to the answers to this question.