I have a function that returns 1 if its all ok, and if there is any error it returns the error, that I will print.

PHP Code:
  $do_function = function();
  if (
$do_function == 1) { 
// Its OK
} else { 
$errors[] = $do_function
// Then I will print the errors

I'm worried that the function may return some critical information due to an unanticipated error or something, of course I did not put any return with information the user should not see.