How can I format my php print_r statements to be more readable in html?

Normally print_r spits out an array with out any html linebreaks, so in a web browser, it is hard to see what your array looks like.  I just throw in this little function to clean up the output:

function print_r_html ($arr) {
        ?><pre><?
        print_r($arr);
        ?></pre><?
}

Just call it with "print_r_html($array);" for quick debugging of your scripts.