Insert decimal point into specific position

Question

Currently have a number stored in a variable that is returned from an API call. I wish to insert a decimal point into this number before it's returned the the user.

I have tried exploding it into a list however, no luck.

$cTotal = 32275247631

I wish this variable to become:

$cTotal = 32.275247631

Answer 1

Do it with php's substr_replace

<?php
$num = 123456789;
$newstr = substr_replace($num, ".", 2, 0);
echo $newstr; // returns 12.3456789
?>