How to divide numbers without remainder in PHP?

Question

How does one divide numbers but exclude the remainder in PHP?

Answer 1

For most practical purposes, the accepted answer is correct.

However, for builds where integers are 64 bits wide, not all possible integer values are representable as a double-precision float; See my comment on the accepted answer for details.

A variation of

$n = ($i - $i % $m) / $m;

(code taken from KingCrunch's comment under another answer) will avoid this problem depending on the desired rounding behavior (bear in mind that the result of the modulus operator may be negative).