function flickr_search($tag = '', $limit = '10', $api_key = '')
{
    $method = 'flickr.photos.search';
    $url = 'http://api.flickr.com/services/rest/?method='.$method.'&format=php_serial&api_key='.$api_key.'&tags='.urlencode($tag).'&per_page='.intval($limit);

    $c = curl_init();
    curl_setopt($c, CURLOPT_URL, $url);
    curl_setopt($c, CURLOPT_HEADER, 0);
    curl_setopt($c, CURLOPT_RETURNTRANSFER, true);
    $r = curl_exec($c);
    curl_close($c);
    $data = unserialize($r);

    $output = array();
    foreach($data['photos']['photo'] as $row) {
        $i = array();
        $i['title'] = $row['title'];
        $i['link'] = 'http://www.flickr.com/photos/'.$row['owner'].'/'.$row['id'];
        $i['img_square'] = 'http://farm'.$row['farm'].'.static.flickr.com/'.$row['server'].'/'.$row['id'].'_'.$row['secret'].'_s.jpg';
        $i['img_thumbnail'] = 'http://farm'.$row['farm'].'.static.flickr.com/'.$row['server'].'/'.$row['id'].'_'.$row['secret'].'_t.jpg';
        $i['img_small'] = 'http://farm'.$row['farm'].'.static.flickr.com/'.$row['server'].'/'.$row['id'].'_'.$row['secret'].'_m.jpg';
        $i['img_medium'] = 'http://farm'.$row['farm'].'.static.flickr.com/'.$row['server'].'/'.$row['id'].'_'.$row['secret'].'.jpg';
        $i['img_large'] = 'http://farm'.$row['farm'].'.static.flickr.com/'.$row['server'].'/'.$row['id'].'_'.$row['secret'].'_b.jpg';
        $i['img_original'] = 'http://farm'.$row['farm'].'.static.flickr.com/'.$row['server'].'/'.$row['id'].'_'.$row['secret'].'_o.jpg';
        $output[] = $i;
    }

    return $output;
}