I think your solution by changing precision is not good enough because float
summation is still not working properly.
<?php
var_dump(0.1 + 0.7);
returns:
0.7999999999
expected: 0.8
On Jan 7, 2019 7:17 PM, Semen Dubina <p...@sam002.net> wrote:
>
> > 07.01.2019, 20:24, "Thomas Bley" <ma...@thomasbley.de>:
> >
> > Hello,
> >
> > good point, having:
> >
> > echo ini_get('precision') . PHP_EOL;
> > echo ini_get('serialize_precision') . PHP_EOL;
> > echo json_encode(array('price' => round('45.99', 2))) . PHP_EOL;
> > echo (0.1+0.7), json_encode(0.1+0.7) . PHP_EOL;
> >
> > gives (https://3v4l.org/ldgo8):
> >
> > Output for 7.1.0 - 7.3.0
> > 14
> > -1
> > {"price":45.99}
> > 0.80.7999999999999999
> >
> > Output for 5.3.6 - 5.6.38, 7.0.0 - 7.0.33
> > 14
> > 17
> > {"price":45.99}
> > 0.80.8
> >
> > what is the preferred way to upgrade from php 5.6 to 7.x in order to get
> > the same results?
> >
> > Regards
> > Thomas
> >
>
> Force 'serialize_precision': https://3v4l.org/coaWm
> But remember - a float is not suitable for output. You need rounded and
> formatted manually.
>
> P.S. Try with JS: `JSON.stringify(0.1+0.7);`
>
> -- Semen V. Dubina https://sam002.net/
>
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