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<?php
/* returns the shortened url */
function get_bitly_short_url($url,$login,$appkey,$format='txt') {
    $connectURL = 'http://api.bit.ly/v3/shorten?login='.$login.'&apiKey='.$appkey.'&uri='.urlencode($url).'&format='.$format;
    return curl_get_result($connectURL);
}

/* returns expanded url */
function get_bitly_long_url($url,$login,$appkey,$format='txt') {
    $connectURL = 'http://api.bit.ly/v3/expand?login='.$login.'&apiKey='.$appkey.'&shortUrl='.urlencode($url).'&format='.$format;
    return curl_get_result($connectURL);
}

/* returns a result form url */
function curl_get_result($url) {
    $ch = curl_init();
    $timeout = 5;
    curl_setopt($ch,CURLOPT_URL,$url);
    curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
    curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);
    $data = curl_exec($ch);
    curl_close($ch);
    return $data;
}

/* get the short url */
$short_url = get_bitly_short_url('http://richardxxx0x.wicp.net','richardxxx0x','xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx');

/* get the long url from the short one */
$long_url = get_bitly_long_url($short_url,'richardxxx0x','xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'); 

echo $short_url;
?>