Increment Decrement Spacing

There should be no whitespace between variables and increment/decrement operators.

Valid: No whitespace between variables and increment/decrement operators.

++<em></em>$i; --<em></em>$i['key']['id']; ClassName::$prop<em></em>++; $obj->prop<em></em>--;

Invalid: Whitespace between variables and increment/decrement operators.

++<em> </em>$i; --<em> </em>$i['key']['id']; ClassName::$prop<em> </em>++; $obj->prop<em> </em>--;