Yii2: Yii2 trace logs floating numbers wrongly
What steps will reproduce the problem?
\Yii::trace(23.10, 'debug');
What is the expected result?
23.10
What do you get instead?
23.10000000000000142108547152020037174224853515625
Additional info
| Q | A
| ---------------- | ---
| Yii version | 2.0.?
| PHP version | 5.6
| Operating system | mac os 10.12.6
nileshanand11
All 3 comments
What version of Yii is that?
samdark
on 23 Feb 2018
Yii version : 2.0.13
On Fri, Feb 23, 2018 at 11:32 PM, Alexander Makarov <
[email protected]> wrote:
What version of Yii is that?
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nileshanand11
on 24 Feb 2018
The problem is here with the function var_export(23.10, true). Which subsequently drills down to how actually floating point numbers are dealt in a language.
PHP manual warns on _floating point numbers_:
Floating point numbers have limited precision. Although it depends on the system, PHP typically uses the IEEE 754 double precision format, which will give a maximum relative error due to rounding in the order of 1.11e-16.
DecoderReloaded
on 27 Feb 2018
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Most helpful comment
The problem is here with the function
var_export(23.10, true). Which subsequently drills down to how actually floating point numbers are dealt in a language.PHP manual warns on _floating point numbers_: