How do I work out the remainder of a division?
There are various mathematical reasons you might want to know the remainder, and it's also useful to know for instance in a grid where you want to know the x,y co-ordinates of a particular cell.
To find the remainder of a division, called the modulus, simply use the percentage symbol - % - like this:
<?php
$value = 7;
echo $value % 5;
?>
This will print '2' to the screen.
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