用PHP输出样式一般不是好的做法，PHP擅长后台逻辑数据处理，前台一般交与js与css控制
非得想用php输出复选框的话，代码如下：
$tmpArr["brand"] = "brand";
$tmpArr["service"] = "good service";
$tmpArr["easy"] = "easy to get";
$tmpArr["advertise"] = "advertise";
echo "
why choose us:
";
foreach ($tmpArr as $key=>$value){
echo "$key";
}
echo "";
异步处理的话用ajax
新增表格的用jQuery插件吧，容易的多,见jQuery的append
