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# fmod

(PHP 4 >= 4.2.0, PHP 5)

fmod -- Returns the floating point remainder (modulo) of the division of the arguments

## Description

float fmod ( float x, float y)

Returns the floating point remainder of dividing the dividend (x) by the divisor (y). The reminder (r) is defined as: x = i * y + r, for some integer i. If y is non-zero, r has the same sign as x and a magnitude less than the magnitude of y.

示範 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 ?>`

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