What should I do if the php round function is not accurate?

The solution to the inaccurate php round function: first find and open the php.ini configuration file; then set the content to "serialize_precision=-1".

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

Solution to the problem of inaccurate accuracy after using round in php7.1 Solution

There is a problem with accuracy after using round(xx, 2) in the project, and the result is not rounded to 2 decimal places.

Googled for a long time and finally found a solution.

Set serialize_precision = -1 in php.ini That’s it

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