Capital letters in class name PHP

Question

I have two classes in my system. One is called file and second is File. On my localhost when i instantiate file i get file object, but my friend running the same script gets

Answer 1

PHP is case insensitive for the class naming. it means you can normally do $file = new file() even if the class is named File and vice-versa.

Are you by any chance relying on the auto loading of class files ? If this is the case, it is possible that depending on the computer, the interpreter don't always find the same file first. This will explain the problem.

I strongly suggest that you rename your classes. It's always a bad idea to rely on case to differentiate two different things and by convention, class names always start with a capital letter.

If you can't change the class names, I suggest to have a look at php namespaces.