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  • PHP 增删改练习

    <!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>无标题文档</title>
    <style type="text/css">
    *
    {
        margin:0px auto;
        padding:0px;
    }
    .hy
    {
        width:200px;
        height:50px;
        margin-top:5px;
    }
    .hy:hover
    {
        background-color:#60C;
        cursor:pointer;
        color:white;
    }
    .pic
    {
        width:50px;
        height:50px;
        float:left;
    }
    .nk
    {
        height:50px;
        width:130px;
        float:left;
        margin-left:20px;
        line-height:50px;
        vertical-align:middle;
    }
    </style>
    </head>
    
    <body>
    <?php
    $uid = "18653378660"; //登录者
    ?>
    
    <?php
    
    //1.造连接对象
    $db = new MySQLi("localhost","root","123","weixin");
    //2.判断连接是否出错
    !mysqli_connect_error() or die("连接失败!");
    //3.写SQL语句
    $sql = "select Friends from Friends where Uid='{$uid}'";
    //4.执行SQL语句
    $result = $db->query($sql);
    //5.从结果集中读取数据
    $attr = $result->fetch_all();
    
    //var_dump($attr);
    
    //循环读取好友的用户名
    foreach($attr as $v)
    {
        $fuid = $v[0]; //好友用户名
        
        //根据好友的用户名去查Users表查出昵称和头像
        $sqlu = "select NickName,Pic from Users where Uid='{$fuid}'";
        $r = $db->query($sqlu);
        $attru = $r->fetch_row();
        
        echo "<div class='hy' onclick='Select(this)'>
            <div class='pic'><img src='{$attru[1]}' width='50' height='50' /></div>
            <div class='nk'>{$attru[0]}</div>
        </div>";
    }
    
    ?>
    
    </body>
    <script type="text/javascript">
    function Select(aa)
    {
        //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.backgroundColor = "#60C";
        aa.style.color = "white";
    }
    
    </script>
    </html>

    <!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>无标题文档</title>
    <style type="text/css">
    .test
    {
        width:200px;
        height:50px;
        float:left;
    }
    </style>
    </head>
    
    <body>
    
    <div class="test">AA</div>
    <div class="test">BB</div>
    <div class="test">CC</div>
    <div class="test">DD</div>
    <div class="test">EE</div>
    <div class="test">FF</div>
    
    <div style="clear:both"></div>
    
    <div style="100px; height:100px; background-color:#03C">TEST</div>
    
    
    </body>
    </html>
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  • 原文地址:https://www.cnblogs.com/yy01/p/5461648.html
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