php获取网站Alexa值排名的代码

<?php
/**
 * Alexa Rank with PHP
 * 
 * @param string $domain (www.w3bes.com)
 * @return int || void
 */
function alexa($domain){
  $uri = 'http://data.alexa.com/data?cli=10&dat=snbamz&url=';
  $uri .= $domain;

  $xml = simplexml_load_file($uri);

  if (isset($xml->SD[1]->POPULARITY))
    return (int) $xml->SD[1]->POPULARITY->attributes()->TEXT;
}
echo '100素材网Alexa 排名：'.alexa('100sucai.com');
?>

<?php
$url="baidu.com";
$xml = simplexml_load_file('http://data.alexa.com/data?cli=10&dat=snbamz&url='.$url);
$rank=isset($xml->SD[1]->POPULARITY)?$xml->SD[1]->POPULARITY->attributes()->TEXT:0;
$web=(string)$xml->SD[0]->attributes()->HOST;
echo $web." Alexa 排名:".$rank;
?>