Write a PHP script, which changes the color of the first character of a word

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 excercise.

<?php
$text = 'Tech Study';
$text = preg_replace('/(\b[a-z])/i','<span style="color:red;">\1</span>',$text);
echo $text;
?>

Result:

Tech Study