必应壁纸php获取接口

<?php

if($_GET['idx']==null){

$str=file_get_contents('http://cn.bing.com/HPImageArchive.aspx?idx=0&n=1');

}

$str=file_get_contents('http://cn.bing.com/HPImageArchive.aspx?idx='.$_GET['idx'].'&n=1');

if(preg_match("/<url>(.+?)<\/url>/ies",$str,$matches)){

$imgurl='http://cn.bing.com'.$matches[1];

}

if($imgurl){

header('Content-Type: image/JPEG');

@ob_end_clean();

@readfile($imgurl);

@flush(); @ob_flush();

exit();

}else{

exit('error');

?>