php 判断平台是安卓还是ios
public function testagent(){
if(strpos($_SERVER['HTTP_USER_AGENT'], 'iPhone')||strpos($_SERVER['HTTP_USER_AGENT'], 'iPad')){
echo 'systerm is IOS';
}else if(strpos($_SERVER['HTTP_USER_AGENT'], 'Android')){
echo 'systerm is Android';
}else{
echo 'systerm is other';
}
}