Description:
------------
Consider following example:

class Example
{
    const LONG_SENTENCE = "This sentence is really very very very very very very very very very very very very very very very very very very very very very very very very long";

};

It is not possible to breakup the assigned string using dot operator, and php also doesn't support neither c-like constant string concatenation ("really " "very" -> "really very") or c-like line continuation (end the line with backslash). 

This is really annoying, cause I end with the code containing extra long lines and I can't split them, making code unreadable without scrolling.