Divides two numbers, according to IEEE 754

说明

fdiv(float $num1, float $num2): float

Returns the floating point result of dividing the num1 by the num2. If the num2 is zero, then one of INF, -INF, or NAN will be returned.

Note that in comparisons, NAN will never be equal (==) or identical (===) to any value, including itself.

参数

num1: The dividend (numerator)
num2: The divisor

返回值

The floating point result of num1/num2

示例

示例 #1 Using fdiv()

<?php
var_dump(fdiv(5.7, 1.3)); // float(4.384615384615385)
var_dump(fdiv(4, 2)); // float(2)
var_dump(fdiv(1.0, 0.0)); // float(INF)
var_dump(fdiv(-1.0, 0.0)); // float(-INF)
var_dump(fdiv(0.0, 0.0)); // float(NAN)
?>

参见

Division operator /
intdiv() - 对除法结果取整 - Integer division
fmod() - 返回除法的浮点数余数
fpow() - Raise one number to the power of another, according to IEEE 754