Question

Using php, i would like to take an all lowercase word and if the first letter of the word starts with an i then capitalise the second letter.

So if my word was iphone then after the preg_replace() the string would be iPhone.

Answer 1

Try this:

$str = preg_replace('/^i([a-z])([a-z]+)$/e', '"i" . strtoupper("\\1") . "\\2"', $str);

This code checks a single word to see if it is all lowercase. If so it capitalizes the second letter.

If it gets more complex, you may want to use preg_replace_callback() instead.