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Date: Mon, 24 Oct 2016 15:54:31 +0200
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Subject: RE: [PHP-DEV] strtod and NaN vs. zero
From: anatol.php@belski.net ("Anatol Belski")

Hi Marc,

> -----Original Message-----
> From: Marc Bennewitz [mailto:dev@mabe.berlin]
> Sent: Sunday, October 23, 2016 12:56 PM
> To: PHP Internals List <internals@lists.php.net>
> Subject: [PHP-DEV] strtod and NaN vs. zero
>=20
> Hi internals,
>=20
> On casting a non numeric value to a float in PHP the result will be =
float(0).
>=20
> In PHP-7.0 an exception was introduced that on casting a string =
"/\s*NaN\s*/i"
> will result in float(NaN).
>=20
> https://3v4l.org/2Xakm
>=20
It is a BC breaching bug and was fixed =
https://bugs.php.net/bug.php?id=3D73329 . Cast of string to number is =
always zero, a way to change it would cause another BC breach which IMHO =
were not worthwhile.

Regards

Anatol