<?php

$domain = 'Checkthisup.com';
echo 'Domain: '.$domain.'<br>';


$data = file_get_contents('http://data.alexa.com/data?cli=10&dat=snbamz&url='.$domain);
if (preg_match('/\<popularity url\="(.*?)" text\="([0-9]+)" source="(.*?)"\/\>/si', $data, $matches))
{
    $rank = $matches[2];
}
if (preg_match('/\<linksin num\="([0-9]+)"\/\>/si', $data, $matches))
{
   $nooflinks = $matches[1];
}
echo 'Alexa Rank: '.number_format($rank).'<br>';
echo 'Number of links: '.number_format($nooflinks). '<br>';

?>