Add class if cell represents today in this PHP generate calendar function
<p>I have been using this function for a while without a problem, although I need to add todays date as a class to the <code>&lt;td&gt;</code>. Where would I add this?</p>

<pre><code>/**
 * Returns a HTML calendar
 * 
 * @return HTML table
 */
public function generateCalendar($year, $month, $days = array(), $day_name_length = 3, $month_href = NULL, $first_day = 0, $pn = array(), $hover_content = array()) {
    $first_of_month = gmmktime(0,0,0,$month,1,$year);
    #remember that mktime will automatically correct if invalid dates are entered for instance, mktime(0,0,0,12,32,1997) will be the date for Jan 1, 1998 this provides a built in "rounding" feature to generate_calendar()

    $day_names = array(); #generate all the day names according to the current locale
    for($n=0,$t=(3+$first_day)*86400; $n&lt;7; $n++,$t+=86400) #January 4, 1970 was a Sunday
        $day_names[$n] = ucfirst(gmstrftime('%A',$t)); #%A means full textual day name

    list($month, $year, $month_name, $weekday) = explode(',',gmstrftime('%m,%Y,%B,%w',$first_of_month));
    $weekday = ($weekday + 7 - $first_day) % 7; #adjust for $first_day
    $title   = htmlentities(ucfirst($month_name)).'&amp;nbsp;'.$year;  #note that some locales don't capitalize month and day names

    @list($p, $pl) = each($pn); @list($n, $nl) = each($pn); #previous and next links, if applicable
    if($p) $p = '&lt;span class="calendar-prev"&gt;'.($pl ? '&lt;a href="'.htmlspecialchars($pl).'"&gt;'.$p.'&lt;/a&gt;' : $p).'&lt;/span&gt;&amp;nbsp;';
    if($n) $n = '&amp;nbsp;&lt;span class="calendar-next"&gt;'.($nl ? '&lt;a href="'.htmlspecialchars($nl).'"&gt;'.$n.'&lt;/a&gt;' : $n).'&lt;/span&gt;';
    $calendar = '&lt;table class="calendar"&gt;'.
        '&lt;thead&gt;&lt;tr&gt;&lt;td colspan="7" class="calendar-month"&gt;'.$p.($month_href ? '&lt;a href="'.htmlspecialchars($month_href).'"&gt;'.$title.'&lt;/a&gt;' : $title).$n."&lt;/td&gt;&lt;tr&gt;";

    if($day_name_length){ #if the day names should be shown ($day_name_length &gt; 0)
        #if day_name_length is &gt;3, the full name of the day will be printed

        foreach($day_names as $d)
            $calendar .= '&lt;th abbr="'.htmlentities($d).'"&gt;'.htmlentities($day_name_length &lt; 4 ? substr($d,0,$day_name_length) : $d).'&lt;/th&gt;';
        $calendar .= "&lt;/tr&gt;";
    }

    $calendar .= "&lt;/thead&gt;&lt;tbody&gt;&lt;tr&gt;";

    if($weekday &gt; 0) $calendar .= '&lt;td colspan="'.$weekday.'"&gt;&amp;nbsp;&lt;/td&gt;'; #initial 'empty' days
    for($day=1,$days_in_month=gmdate('t',$first_of_month); $day&lt;=$days_in_month; $day++,$weekday++){
        if($weekday == 7){
            $weekday   = 0; #start a new week
            $calendar .= "&lt;/tr&gt;&lt;tr&gt;";
        }
        if(isset($days[$day]) and is_array($days[$day])){
            @list($link, $classes, $content) = $days[$day];
            if(is_null($content))  $content  = $day;
            @list($sub_content) = $hover_content[$day];
            $calendar .= '&lt;td'.($classes ? ' class="'.htmlspecialchars($classes).'"&gt;' : '&gt;').'&lt;div class="wrapper_div"&gt;'.
                '&lt;div class="hoverContent"&gt;'.$sub_content.'&lt;/div&gt;'.
                ($link ? '&lt;a class="iframe" href="'.htmlspecialchars($link).'"&gt;'.$content.'&lt;/a&gt;' : $content). '&lt;/div&gt;&lt;/td&gt;';
        }
        else $calendar .= "&lt;td&gt;&lt;div&gt;$day&lt;/div&gt;&lt;/td&gt;";
    }
    if($weekday != 7) $calendar .= '&lt;td colspan="'.(7-$weekday).'"&gt;&amp;nbsp;&lt;/td&gt;'; #remaining "empty" days

    return $calendar."&lt;/tr&gt;&lt;/tbody&gt;&lt;/table&gt;";
}
</code></pre>
