I am currently writing a project about finance. There are a lot of decimal issues involved. Once when I used floor to round down to two decimal places, I suddenly found that the following code was abnormal.
$money=271.28; echo $money=floor($money*pow(10,2))/100I was surprised to find that the output was not 271.28 but 271.27!
Later I checked a lot of information and saw this on the php official website:
Later I printed the result of the above operation:
printf("%.12f", $money*pow(10,2));found that the result was: 27127.999999999996
It turned out to be an accuracy problem. No unified solution has been found yet. I can only add
if ($money - round ( $money, 2 ) to the code logic to avoid reprocessing the data that has been accurate to two digits. <p>If anyone knows another way to implement the above function (accurate to two decimal places and discard whatever the third digit is), please let me know. <br></p><p><spanfira sans pro font-size:16px line-height:24px background-color:rgb><spanfira sans pro font-size:16px line-height:24px background-color:rgb></spanfira></spanfira></p> <p> The above introduces the problem of PHP's floor function. , including relevant content, I hope it will be helpful to friends who are interested in PHP tutorials. </p> <p> </p>

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