<?php
function getFriendList($id)
{
    $url="http://api.fanfou.com/users/friends.xml?id=".$id; 
    //print $url;
    $ch = curl_init($url); 
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
    $output = curl_exec($ch); 
    curl_close($ch);
    $xml=simplexml_load_string($output);
    $result=$xml->xpath("//id");
    return $result;
}
 
function myGenerate($id)
{
    $url="http://api.fanfou.com/users/show.xml?id=".$id; 
    //print $url;
    $ch = curl_init($url); 
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
    $output = curl_exec($ch); 
    curl_close($ch);
    if ($output=="验证失败")
    {
        return;
    }
    $xml=simplexml_load_string($output);
    $name=$xml->xpath("//user/name");
    $img=$xml->xpath("//profile_image_url"); 
    $line="<li><a href=\"http://fanfou.com/$id\"><img src=\"$img[0][0]\" style=\"margin:0px 10 px 10px; border: 1px solid rgb(255, 255, 255); \"><br />$name[0]</a><br /><br /></li>";
    print $line; 
}
 
function myPrint($list)
{
    print "<ol>";
    foreach ($list as $value) 
    {
        myGenerate($value);
    }
    print "</ol>";
}
print "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />";
//to ensure the encoding system to be utf-8.
$a=$_GET["a"];
$b=$_GET["b"];
$my=getFriendList($a);
$his=getFriendList($b);
$our=array_intersect($my,$his);
myPrint($our);
?>