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Message-ID: <002615C1-4F70-4B5A-8649-3B7A55B00B69@sakiot.com>
Date: Mon, 18 Sep 2023 02:32:13 +0900
To: internals@lists.php.net
Subject: adding serialize_precision's value that uses mode2 and long double
From: saki@sakiot.com (Saki Takamachi)

Hi, internals.

I had incorrect knowledge the `serialize_precision` until recently.
I knew that setting this to `-1` would use a `long double`, but I didn't =
know that the number of digits would not be `17`.

I've looked through RFC related to this.
https://wiki.php.net/rfc/precise_float_value

There doesn't seem to be a setting that allows you to use `long double` =
and `mode2` at the same time at the moment.

I think there are various methods, such as a simple method such as =
simply setting `serialize_precision =3D -2`, or a method of adding =
another new setting item.

When using long doubles, it is somewhat inconvenient not to be able to =
display all digits with `var_dump()` or `debug_zval_dump()` when =
debugging.
(I use the word "inconvenient" because there is probably an alternative =
method.)

What do you think?

Saki=