You could make the http requests for the API server run in parallel with curl, something like this:
//create the multiple cURL handle
$mh = curl_multi_init();
// gather curl handlers into an array for later use and add them to the multi request
$requests = array();
foreach ($feed as $url2) {
$url=$url2['url'];
$title=$url2['name'];
// strpos can return 0 which will evaluate to false even if the needle is in fact in the beginning of the haystack
if (strpos($url, $key) !== false || strpos($title,$key) !== false) {
$ch = curl_init("http://api.site.com/web?uri=".$url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_multi_add_handle($mh, $ch);
$requests[] = $ch;
}
}
// execute the requests
$running=null;
do {
// exec the multy request, update the $running variable
while (CURLM_CALL_MULTI_PERFORM === curl_multi_exec($mh, $running));
// break the loop if we are done
if (!$running) {
break;
}
// block until something interesting happens on a request
while (($res = curl_multi_select($mh)) === 0);
// if its an error, do something about it!
if ($res === false) {
// handle select errors here!
break;
}
// repeat forever (or until we break out)
} while (true);
// loop trough the results
foreach ($requests as $ch) {
// load resposne
$xml = simplexml_load_string(curl_multi_getcontent($ch));
// do your original processing
echo "<li>".$xml->filter->filterResponse->filteredText."</li>";
// clean up curl handler
curl_multi_remove_handle($mh, $ch);
}
curl_multi_close($mh);
I can't really test this without real data (apart from the syntax) but you get the idea.
Your usage of strpos() looks strange to me, it might reutnr 0 (number zero) if the needle is in the beginning of the haystack but 0 == true evaulates to false, i'm not sure if this is you wanted.