织梦dede5.7网站软件登记怎么替换成图标显示

if ( ! function_exists('GetRankStar'))
{
 function GetRankStar($rank)
 {
$nstar = "";
for($i=1;$i<=$rank;$i++)
{
 $nstar .= "★";
}
for($i;$i<=5;$i++)
{
 $nstar .= "☆";
}
return $nstar;
 }
}

$nstar .= "★";

$nstar .= "<img src=/img1/star1.gif>";

$nstar .= "☆";

$nstar .= "<img src=/img1/star2.gif>";