PHP: Mark as link values inside a string (a textarea string) : <p>I'm developing a wikipedia-like Web application.
I want to show articles with the possibllity to link to other articles.</p>

<p>The way to do it that I can think of, is to mark manually values as a sign for link, like this: " Hello |world| " ("world" would be the link for an article). later, i'll have to find inside the textarea string all the words marked with | on start and | on it's end. bottom line, some string functions are needed. </p>

<p>How should I do that? can you, please, give me an example?</p>

<p>Thank you in advance.</p>
