代码：
<?php
$contents = file_get_contents("http://cn.bing.com/HPImageArchive.aspx?idx=0&n=1");
$from='<url>';
$end="</url>";
$q=cut($contents, $from, $end);
echo 'http://cn.bing.com'.$q;
function cut($file,$from,$end){
$message=explode($from,$file);
$message=explode($end,$message[1]);
return $message[0];
}
?>
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