(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
fmod — Returns the floating point remainder (modulo) of the division of the arguments
Returns the floating point remainder of dividing the dividend
(num1) by the divisor (num2).
The remainder (r) is defined as: num1 = i * num2 + r, for
some integer i. If num2 is
non-zero, r has the same sign as
num1 and a magnitude less than the magnitude of
num2.
num1The dividend
num2The divisor
The floating point remainder of
num1/num2
Example #1 Using fmod()
<?php
$x = 5.7;
$y = 1.3;
$r = fmod($x, $y);
// $r equals 0.5, because 4 * 1.3 + 0.5 = 5.7
?>