I've a div with text inside that is displayed using PHP & MySQL, the structure is like this:

<div class=description>

    <p>

    Here is a lot of text.

    </p>

</div>

I want to display a Read more link when the text inside the p-tag is more than 100 characters. I can display the Read more link with PHP like this:

// strip tags to avoid breaking any html

$string = strip_tags($string);



if (strlen($string) > 100) {



    // truncate string

    $stringCut = substr($string, 0, 100);



    // make sure it ends in a word so assassinate doesn't become ass...

    $string = substr($stringCut, 0, strrpos($stringCut, ' ')).'... <a href=/this/story>Read More</a>'; 

}

echo $string;

The problem is that when the link is clicked I want to show all of the text in the same DIV. Is this possible with PHP or do I need jQuery or something?