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id ±íID£¨Î¨Ò»£©
title ¸÷Àà±êÌâ
flid Àà±ðµÄID £¨´óÀàΪ1 ÖÐÀàΪ2 СÀàΪ3£©
pid ÉÏÀàµÄID£¨´óÀà¾Í¸ú´óÀ࣬Ìá½»ÖÐÀàµÄʱºòÕâµØ·½Ð´´óÀàµÄID£¬ÌύСÀàµÄʱºòдÖÐÀàµÄID£© £©
<?php
   $link=mysql_connect("localhost","root","root") or die("Êý¾Ý¿â·þÎñÆ÷Á¬½Ó´íÎó".mysql_error());
   mysql_select_db("sanji",$link) or die("Êý¾Ý¿â·ÃÎÊ´íÎó".mysql_error());
   mysql_query("set character set gb2312");
     mysql_query("set names gb2312");
?>
<html>
<head>
<title>ÏÂÀ­¿òÁ¬¶¯</title>
</head>
<body>
<script language="JavaScript">
<!--
var subcat = new Array();
<?
$i=0;
$sql="select * from sanji where flid=2";
$query=mysql_query($sql,$link);
while($arr=mysql_fetch_array($query))
{
echo "subcat[".$i++."] = new Array('".$arr["pid"]."','".$arr["title"]."','".$arr["id"]."');\n";
}
?>
var subcat2 = new Array();
<?
$i=0;
$sql="select * from sanji where flid=3";
$query=mysql_query($sql,$link);
while($arr=mysql_fetch_array($query))
{
echo "subcat2[".$i++."] = new Array('".$arr["pid"]."','".$arr["title"]."','".$arr["id"]."');\n";
}
?>
function changeselect1(locationid)
{
document.form1.s2.length = 0;
document.form1.s2.options[0] = new Option('==ÇëÑ¡Ôñ==','');
for (i=0; i<subcat.length; i++)
{
if (subcat[i][0] == locationid)
{document.form1.s2.options[document.form1.s2.length] = new Option(subcat[i][1], subcat[i][2]);}
}
}
function changeselect2(locationid)
{
document.form1.s3.length = 0;
document.form1.s3.options[0] = new Option('==ÇëÑ¡Ôñ==','');
for (i=0; i<subcat2.length; i++)
{
if (subcat2[i][0] == locationid)
{document.form1.s3.options[document.form1.s3.length] = new Option(subcat2[i][1], subcat2[i][2]);}
}
}
//-->
</script>
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<form name="form1">
<select name="s1" onChange="changeselect1(this.value


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class mysql {
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