try and catch in php

Question

So if i have a code like try{ randomfunction();
}catch(){}

And the random function tries to create a new file in local
What will happen if the function fails will an exception be thrown or just the process fails and no exception is thrown from the catch.

Answer 1

I'm not familiar with php but I'm pretty sure that try catch works the same in all languages.

Without try catch block -> exception will be thrown

With try catch block ->
The exception will be catched and you need to define in your catch function what should happen.
In general: try part fails -> catch part is executed

For example a user want to open a file which does not exist. You don't want to crash your program so you catch the exception and maybe print a error message ("file not found") and the user can try to open another file or leave it and do something else with your program.

Answer 2

I think so. Maybe this tutorial helps you: https://netgen.io/blog/modern-error-handling-in-php

Answer 3

Will it catch the error even if it is caused inside a function that is allocated in a different class but called inside the try-catch block in a separate class?