在php int上显示图像更改

Question

在PHP中，当int从0变为1时，如何让它显示图像？我有;

$url = "forums.bukkit.org/alerts.json";
$page = file_get_contents($url);
$json_arr = json_decode($string,true);
return $json_arr['_visitor_alertsUnread'];

当json_arr为＆gt; 0时，如何让它显示图像？

Answer 1

if($json_arr['_visitor_alertsUnread'])
   echo "seen picture!";
else
   echo "not seen picture!";