PHP is lacking of some elemental exceptions. One obvious example would be FileNotFoundException.
Java has a FileNotFoundException, C# has a FileNotFoundException, Python has a FileNotFoundError, ... Why doesn't PHP provide a bundled FileNotFoundException or at least a more general IOException? Because of this shortcoming, developers must address this lack by creating the same custom exceptions repeatedly. This is a suggestion/open discussion, sorry if I didn't post it in the right mailing list. - Mathieu
