A Google URL Shortener Class using the new API

GoogleURLShortener.Example.php

<?php
// Examples!

require_once 'GoogleURLShortener.php';

// Shorten an URL.
$strLongUrl = 'http://www.github.com';
if ($strShortUrl = GoogleURLShortener::shorten($strLongUrl)) {
    echo $strLongUrl . ' shortened: ' . $strShortUrl . '<br>';
}

// Expand an URL.
$strShortUrl = 'http://goo.gl/ddom'; // www.linux.com
if ($strLongUrl = GoogleURLShortener::expand($strShortUrl)) {
    echo $strShortUrl . ' expanded: ' . $strLongUrl . '<br>';
}
?>

GoogleURLShortener.php

<?php
class GoogleURLShortener {
    public static function shorten($strUrl) {
        // Would love to use FILTER_VALIDATE_URL here, but it sucks even more
        // than this regular expression does.
        if (!preg_match('/^(http|https):\/\/([A-Z0-9][A-Z0-9_-]*(?:\.[A-Z0-9][A-Z0-9_-]*)+):?(\d+)?\/?/i', $strUrl)) return false;
        $oCurl = curl_init('https://www.googleapis.com/urlshortener/v1/url');
        curl_setopt_array($oCurl, array (CURLOPT_HTTPHEADER => array('Content-Type: application/json')
                                        ,CURLOPT_FRESH_CONNECT => TRUE
                                        ,CURLOPT_RETURNTRANSFER => TRUE
                                        ,CURLOPT_TIMEOUT => 10
                                        ,CURLOPT_CONNECTTIMEOUT => 0
                                        ,CURLOPT_POST => TRUE
                                        ,CURLOPT_POSTFIELDS => '{"longUrl": "' . $strUrl . '"}'));
        $strReturn = json_decode(curl_exec($oCurl), true);
        return ($strReturn['id'] ? $strReturn['id'] : false);
    }

    public static function expand($strUrl) {
        if (!preg_match('#http://goo.gl/(.*)#i', $strUrl)) return false;
        $oCurl = curl_init('https://www.googleapis.com/urlshortener/v1/url?shortUrl=' . $strUrl);
        curl_setopt_array($oCurl, array (CURLOPT_FRESH_CONNECT => TRUE
                                        ,CURLOPT_RETURNTRANSFER => TRUE
                                        ,CURLOPT_TIMEOUT => 10
                                        ,CURLOPT_CONNECTTIMEOUT => 0));
        $strReturn = json_decode(curl_exec($oCurl), true);
        return ($strReturn['longUrl'] ? $strReturn['longUrl'] : false);
    }
}
?>