菜鸟问问题,帮忙解释一下这段程序?

Question

<?php
$query="select * from bigclass";
$result=$dbConn->connection($query);
$result1=$dbConn->connection("select * from smallclass order by smallClassId desc");
?>
<script language="javascript">
var onecount;
onecount=0;
subcat = new Array();
<?php
$CountLinkAction=0;
while($array1=mysql_fetch_array($result1["rs"]))
{
?>
 subcat[<?=$CountLinkAction?>]=new Array("<?=trim($array1['smallClassName'])?>","<?=trim($array1['bigClassId'])?>");
<?
$CountLinkAction++;
}
    ?>
onecount=<?=$CountLinkAction?>; function changelocation(locationid)
{
    document.form1.nsort.length = 0; 
    var locationid=locationid;
    var i;
    document.form1.nsort.options[0] = new Option('选择小类','');
    for (i=0;i < onecount; i++)
        {
            if (subcat[i][1] == locationid)
            { 
                document.form1.nsort.options[document.form1.nsort.length] = new Option(subcat[i][0], subcat[i][0]);
            }        
        }

}    
</script>

Answer 1

大体是读取数据库的分类内容并显示的分类程序,具体的得根据环境定