Write a PHP script to print the next character of a specific character

PHP is a server scripting language, and It is a powerful tool for making interactive and dynamic Web-pages. I have used WampServer 2.2 for following example.

<?php
$char = 'R';
$nextchar = ++$char; 
 
if (strlen($nextchar) > 1) 
{
 $nextchar = $nextchar[0];
 }
echo $nextchar."\n";
?>

Result:

S