Example: PHP program to convert the reverse case of an input character

C
C++
C#
Java
Python
PHP

<?php
// PHP program to convert the reverse case of an input character

$random_char = 'e';

echo "The Reverse case of the '" . $random_char . "' is: '";
if (ctype_lower($random_char))
	echo strtoupper($random_char) . "'\n";
else
	echo strtolower($random_char) . "'\n";

?>