<?php
if(isset($_POST['url'])) {
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_URL, 'http://www.google.com/url?q='.urlencode($_POST['url']));
    curl_setopt($curl, CURLOPT_HEADER, false);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST,  0);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
    curl_setopt($curl, CURLOPT_SSLVERSION, 3);
    curl_setopt($curl, CURLOPT_USERAGENT, "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.21 (KHTML, like Gecko) Chrome/19.0.1042.0 Safari/535.21");
    $page = curl_exec($curl);

    $dom = new domDocument;
    @$dom->loadHTML($page);
    $dom->preserveWhiteSpace = false;

    $a = $dom->getElementsByTagName('a');
    echo 'http://www.google.com' . $a->item(0)->getAttribute('href');
} else {
    ?>
    <form method="POST">
    Url: <input name="url" />
    <br /><input type="submit" value="Generate url!" />
    </form>
    <?php
}
?>