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.