数据库:
fid=1时是一级
fid=2时时二级;
二级的pid的值等于一级的id的值时,这个二级对应的是该一级下面的二级;
php页面:
<form action="user_list.php?spo=1&" method="post" name="form1">
国家:
<select id="province" name="countrya" class="search searchctiy">
<option value="" >Country</option>
<?php
$rs = mysql_query("select * from tb_country_class where pid='$id' order by id asc");
while($rst = mysql_fetch_array($rs)){
echo'<option value="'.$rst[id].'">'.$rst[title].'</option>';
}
$cccid=$rst[id];
?>
</select>
城市
<select class="city" name="citya">
<option value="" >City</option>
<?php
$rs = mysql_query("select * from tb_country_class where pid='$id' order by id asc");
while($rst = mysql_fetch_array($rs)){
echo'<option value="'.$rst[id].'">'.$rst[title].'</option>';
}
$cccid=$rst[id];
?>
</select>
如何让选中了国家,城市对应的出来