Using php + - * / float calculation of the time, you may encounter some calculations wrong results, as follows:
? < PHP echo intval (0.58 * 100); // output 57
Solution
. 1 <? PHP 2 echo bcmul (0.58, 100); // Output 58
● php provides high accuracy BC libraries deal with this problem
● bcadd - two high-precision digital sum
● bcsub - two high-precision digital subtraction
● bcmul - two high-precision digital multiplication
● bcdiv - two high-precision digital division
● bccomp - Comparison of two high-precision digital, -1, 0, 1
● bcmod - seeking high-precision digital remainder
● bcpow - seeking precision digital power
● bcpowmod - seeking precision digital power modulo very commonly used in number theory
● bcscale - configure the default number of decimal places, the equivalent is Linux bc of the "scale ="
● bcsqrt - seeking precision digital square root
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