I've thrown together the following function to ping an RSS feed to Pingomatic (and return the resulting page) as part of something I'm working on. It works, but is there anything that I should do to change it? Thanks. 
PHP:
<?php
function pingrss($title, $url)
{
$pingurl = "http://pingomatic.com/ping/?title=".urlencode($title)."&blogurl=urlencode".($url)."&rssgurl=".urlencode($url)."&chk_weblogscom=on&chk_blogs=on&chk_technorati=on&chk_feedburner=on&chk_syndic8=on&chk_newsgator=on&chk_myyahoo=on&chk_pubsubcom=on&chk_blogdigger=on&chk_blogrolling=on&chk_blogstreet=on&chk_moreover=on&chk_weblogalot=on&chk_icerocket=on&chk_newsisfree=on&chk_topicexchange=on&chk_google=on&chk_tailrank=on&chk_bloglines=on&chk_aiderss=on&chk_skygrid=on&chk_audioweblogs=on&chk_rubhub=on&chk_geourl=on&chk_a2b=on&chk_blogshares=on";
$ch = curl_init();
$timeout = 5;
curl_setopt($ch,CURLOPT_URL,$pingurl);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);
curl_setopt($ch,CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.1) Gecko/20061204 Firefox/2.0.0.1");
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
?>