学习：查询好友列表
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>练习数据库与网页布局</title>
<style>
*
{
marger:0px auto;
padding:0px;
}
.hy
{
200px;
height:50px;
margin-top:5px;
}
/* //使用下边的js之后，这些就不用了
.hy:hover
{
background-color:#999;
cursor:pointer;
}
*/
.pic
{
50;
height:50px;
float:left;
}
.nk
{
height:50px;
130px;
float:left;
margin-left:20px;
line-height:50px;
vertical-align:middle;
}
</style>
</head>
<body>
<?php
$uid="18653378660";
?>
<?php
$db=new MySQLi("localhost","root","","mydb");
$sql="select friends from friends where uid='18653378660'";
$result = $db->query($sql);
$attr=$result->fetch_all();
foreach($attr as $v)
{
$fuid=$v[0];//好友的用户名
//根据用户名查询users表的昵称和头像
$sqlu="select nickname pic from users where uid='{$fuid}'";
$r=$db->query($sqlu);
$attr=$r->fetch_row();
echo "<div class='hy' onclick='select(this)'>
<div class='pic'><img width='50px' height='50px' src='{$attr[1]}'/></div>
<div class='nk'>{$attr[0]}</div>
</div>";
}
?>
</body>
<script type="text/javascript">
function select(aa) //aa代表该div
{
//清除原选中状态
var div=document.getElementsByClassName("hy");
for(var i=0;i<div.length;i++)
{
div[i].style.backgroundColor="white";
div[i].style.color="#000000";
}
//设置选中
aa.style.bachgroundcolor="#60c";
aa.style.color="while";
}
</script>
</html>