php二级联动菜单-PHP源码

//PHP部分:
//取得下拉联动数据
require("conn.php");
$result=mysql_query("SELECT * FROM units LEFT JOIN users ON (users.unit=units.unid)");
$mx=mysql_num_rows($result);

for ($i=0;$i<$mx;$i++) {
$r=mysql_fetch_array($result);
$uname=$r['uname'];
$unid =$r['unid'];
$usname=$r['username'];
$usid=$r['userid'];

if ($lasun!=$uname) {
$java1=$java1 . ""$uname",";
$java2=$java2 . ""$unid",";
$lasun=$uname;
if ($i>0) {
$java3=$java3 . "],[";
$java4=$java4 . "],[";
}
} else {
$java3=$java3 . ",";
$java4=$java4 . ",";
}

$java3= $java3 . ""$usname"";
$java4= $java4 . ""$usid"";

}

$java1="[" . substr_replace($java1,"",-1) . "]n";
$java2="[" . substr_replace($java2,"",-1) . "]n";
$java3="[[" . $java3 . "]]n";
$java4="[[" . $java4 . "]]n";



//Javascript部分
?>

var fMenu =
var fValue =
var sMenu =
var sValue =

var oWhere = document.all.tar;
var ofMenu = document.createElement("");
var osMenu = document.createElement("");
with(oWhere)appendChild(ofMenu),appendChild(osMenu);

createMainOptions();
createSubOptions(0);

ofMenu.Onchange= function() {createSubOptions(this.selectedIndex);};

function createMainOptions() {
for(var i=0;i }
function createSubOptions(j) {
with(osMenu) {
length=0;
for(var i=0;i }
}

function checkuser() {
if (document.forms[1].elements[1].value=="") { alert("没有选择用户"); return false; }
}
《SCRIPT》