PHP: Get nth character from end of string

Question

I'm sure there must be an easy way to get nth character from the end of string.

For example:

$NthChar = get_nth('Hello', 3); // will result in $NthChar='e'

Answer 1

from substr examples

// Accessing single characters in a string
// can also be achieved using "square brackets"

thus:

$str = "isogram";
echo $str[-1]; // m
echo $str[-2]; // a
echo $str[-3]; // r