Having a 15-year-old project in hand now with Yii 1.1 and PHP 5.4. After a big decision, planned to upgrade the PHP version and keep running the project, and almost achieved it.

After upgrading, I fixed some config and related deprecated functions and successfully ran it on the server. But in some pages/functions, I got this error:

Exception 1 : round(): Argument #1 ($num) must be of type int|float, string given

Exception 2 : Unsupported operand types: string * int

I produced a fix like below,

For Exception 1:

return round($number, 5);

to: (type casting)

return round((int)$number, 5);

For Exception 2:

return ($a + 10);

to: (type cast)

return ((int)$a + 10);

And the error ceased.

It would happen on other files/functions too. Because the project contains almost 4000+ files

So, I want to know, is there some actual solution instead of changing manually in all files with type mismatch?