Adjust the floating point constants to be 1.125 and 2.25 (which
can be exactly represented in base-2 floating point) instead of
1.1 and 2.2 (which can't). This avoids problems on platforms where
floating point calculations suffer from excess precision, the most
commonly used of which is x86 when using 387 FP instructions.
PHP 7.0 fails to parse `?` before a parameter type (meaning Nullable in
newer versions), so just omit these parameter type declarations in
the testcase until we drop PHP 7.0 support.
Also drop some `var_dump($x);` left over from debugging this testcase.
I missed that this change breaks cpp_static, which seems to be to do
with handling the combined getter and setter we emit for static
member variables. Reverting while I figure out how to handle that.
This reverts commit a277748870.
Olly Betts