幫忙說明while中的意思
$sql_membergroup = "select id,name from member_group";
$rs_membergroup = db_query($sql_membergroup);
while($arr_membergroup = db_fetch_array($rs_membergroup))
{
$id = $arr_membergroup['id'];
$membergroup[$id] = $arr_membergroup['name'];
}
$sql = "select id,name,member_group_id,email from member";
$rs = db_query($sql);
while($arr = db_fetch_array($rs))
{
$member_group_id = $arr['member_group_id'];
$member[] = array('id'=>$arr[id],'name'=>$arr['name'],'membergroup'=>$membergroup[$member_group_id],'email'=>$arr['email']);
}