How to make a request to a web page with PHP?

Question

What i\'m trying to achieve is this:

1st- I want to query a page like google but without filling it\'s search filed manually 2nd- I want to get the result and save it to

Answer 1

setOptions(array('lastmodified' => filemtime('local.rss')));
$r->addQueryData(array('category' => 3));
try {
    $r->send();
    if ($r->getResponseCode() == 200) {
        file_put_contents('local.rss', $r->getResponseBody());
    }
} catch (HttpException $ex) {
    echo $ex;
}
?>

From the php manual...