Modulo Operation in PHP

There is a special operator %, with which you can find the remainder of dividing one number by another:

<?php
	echo 10 % 3; // outputs 1
?>

If one number is divisible by the second without a remainder - the result will be zero:

<?php
	echo 10 % 2; // outputs 0
?>

The operator % can, of course, be applied not only to numbers but also to variables:

<?php
	$a = 10;
	$b = 3;
	echo $a % $b; // outputs 1
?>

Given a variable $a with a value of 10 and a variable $b with a value of 3. Find the remainder of dividing $a by $b.