php辨别安卓 ios

<code><span><span><?php </span><span>if</span>(stristr(<span>$_SERVER</span>[<span>'HTTP_USER_AGENT'</span>],<span>'Android'</span>)) {

   <span>echo</span><span>'你的手机是：Android系统'</span>;

}<span>else</span><span>if</span>(stristr(<span>$_SERVER</span>[<span>'HTTP_USER_AGENT'</span>],<span>'iPhone'</span>)){

   <span>echo</span><span>'你的手机是：ISO系统'</span>;

}<span>else</span>{

   <span>echo</span><span>'你使用的是其他系统'</span>;

}
<span>?></span></span></span></code>