Question

I am working on a schedule system that collects information from a RSS feed. However, when I try to strip the necessary segment from the RSS preg_match returns it as invalid.

//Finds the day by stripping data from the myDragonnet RSS feed.
function schedule($given_date) {
    $url = "http://mydragonnet.hkis.edu.hk/schedule/day_schedule_rss.php?schedule_id=1";
    $rss = simplexml_load_file($url);
    $date = date("~jS M Y~", strtotime($given_date)); 
    if($rss) {
        foreach($rss->channel->item as $item) {
            foreach ($item->title as $story) {
                if (strpos($date, $story) !== false) {
                    preg_match("/Day (\d+)/", $story, $m);
                    break; // stop searching
                }   
            } 
        }
    }
    return $m[1];
}

The function : <?php echo schedule('01/24/2010'); ?>

This is the error I’m getting –

Warning: preg_match() [function.preg-match]: Unknown modifier '/' in ***/class.schedule.php on line 31

Answer 1

try this:

// Finds the day by stripping data from the myDragonnet RSS feed.
function schedule($given_date) {
    $url = "http://mydragonnet.hkis.edu.hk/schedule/day_schedule_rss.php?schedule_id=1";
    $rss = simplexml_load_file($url);
    $date = date("jS M Y", strtotime($given_date)); 
    $found = false;

    if($rss) {
        foreach($rss->channel->item as $item) {
            foreach ($item->title as $story) {
                if (strpos($story, $date) !== false) {
                    if (preg_match('/Day (\d+)/i', $story, $m)) {
                        $found = true;
                        break; // stop searching
                    }
                }   
            }

            if ($found)
            {
                break;
            } 
        }
    }
    return $m[1];
}