php操作数据库的简单示例

  放假期间自己又写了几个简单的网页,但在服务器中打开时和在网站上打开时不一样,在服务器中打开的出现了错误,字体比一般的腰大好多,页面也相应地变大了,一些块即使用了浮动和clear浮动还是被遮住了,我只好按照服务器上显示的页面进行修改,这问题应该是兼容性的问题吧,但我也不怎么懂,我把html和css上传。

    

<!DOCTYPE html>

<html>

 <meta name=”viewport” content=”width=device-width, initial-scale=1″ />
<head>
<link rel="stylesheet" type="text/css" href="css/submit.css" />
<meta charset = "utf-8" >

<title> 框架 </title>
            <a href = "http://cie.xtu.edu.cn/ciextu/index.php" style = " float:right;margin-right:30px"><img src = "images/logo.jpg" height = "50px" , width = "50px" /></a>
                  <div id="ytop">xxx同学,您好!</div> 
                <div id="yjoke1">根据科学数据显示,每周都提交作业的童鞋的颜值和智商都会变得很高哦!(一般人我可不告诉他!)哈哈哈,今天是不是感觉自己更加聪明和迷人了呢?
                    </div>
                    <div id="yjoke2">
                啊哈,只要选择好要提交的作业编号,将自己的作业链接粘贴到对应位置,点击“提交”,作业就轻松提交咯!注意看老师的评分和同学们的评论哦!加油,good luck!
                    </div>
</head>
    <div id = "lunbo">
    </div>
    <div id = "banner">
    <form action="submit.php"method="post">
    <div id="ylink">
             粘贴作业链接
            <input type="url"name="url"/><br>
            <input type="submit" value="提交"class="n">
    </div>
    </form>
    <form action="submit.php"method="post">
        <div id ="yselect1">
                 <div id="ytopform">提交作业列表</div>
            <select name="homeworkdate"size="5">
                <option value="date1">第1周(2016-03-07)
                <option value="date2">第2周(2016-xx-xx)
                <option value="date3">第3周(2016-xx-xx)
                <option value="date4">第4周(2016-xx-xx)
                <option value="date5">第5周(2016-xx-xx)
                <option value="date6">第6周(2016-xx-xx)
                <option value="date7">第7周(2016-xx-xx)
                <option value="date8">第8周(2016-xx-xx)
                <option value="datex">第x周(2016-xx-xx)
                <option value="datex">第x周(2016-xx-xx)
                <option value="datex">第x周(2016-xx-xx)
            </select>
    </div>
    </form>
    </div>
</body>

<div id = "foot">

    <div id = "jieshao">
        <ul>
        <li> <a href = "#"> 联系我们 </a></li>
        <li> <a href = "#"> 联系我们 </a></li>
        </ul>
    </div>
    
    <p style = "color :#AAAAAA ;padding-top:60px ; margin-left:500px">designed by XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX</p> 
        


</div>


</html>
*{margin:0px auto;padding:0px auto;background-position:center top;background-repeat:no-repeat;font-family:'微软雅黑',Arail;list-style-type:none;font-size:14px}
a{text-decoration:none;}
a:hover{text-decoration:none;}



#banner {
    margin-top:30px;
    background-image:url("../images/banner.jpg");
    height:400px;
    width:100%;

}
#ytop{
    font-size: large;
    font-family:"华文琥珀" ;
    color: green;
    text-align: center;
}
#yjoke1{
    position: relative;
    left:20px;
    top:15px;
    font-family: "幼圆";
    padding: 5px;
    font-size: 15px;
    color:darkolivegreen;
}
#yjoke2{
    position:relative;
    left: 20px;
    top:15px;
    width:800px;
    font-size:18px;
    font-family:"方正舒体";
    color:palevioletred;
}
#ylink{
    position: relative;
    right:15%;
    top:200px;
    font-size:15px;
    float: right;
}
.n{
    font-family: "幼圆";
    font-size: 15px;
    border: 0px;
    background-color: goldenrod;
}
#yselect1{
    position: relative;
    top:80px;
    left:15%;
    float:left;
}
#ytopform{
    font-size: 20px;
    font-family: "华文琥珀";
    color:green;
}
select {
border:2px solid black;
display: inline;
width:400px;
height:200px;
font-family: "幼圆";
font-size: 18px;
letter-spacing:10px;
}
.table-responsive{
margin-right:auto;
margin-left:auto;
text-align :center;
}


#lunbo {

}

#foot{

 height :50px;
 margin-left:30px;
margin-right:30px;
 background-color:#363636;

}
.table-responsive{
    width:800px;
        
}
#jieshao ul li a{

        float :left;
        margin-top:20px;
        margin-left:300px;
        color : #AAAAAA;

}

#jieshao ul li a:hover{

        color : #8B2323;

}

   今天真正接触了php与数据库的连接,并我们数据库课的数据库导入到我的电脑,做了简单的根据姓名查询学生信息的界面,但还没对网页进行设计。php中连接数据库的方法有面向对象的,但我看资料时并没看到,所以写的也不是面向对象的,但以后我会深入了解这一块,因为团队项目他们写的就是面向对象的。之后还是出了很多错误,百度之后解决了,但其中有些东西还是不太明白,我会尽力学习,努力做到更好。下面上传的是php,html,和查询结果页面。

  

<html>
<head>
</head>
<body>
<h2>finding student</h2>
<form action="form.php"method="post">
fill student name
<input name="name"type="text"size="20"/></br>
<input name="submit"type="submit"value="find"/>
</form>
</body>
</html>
<html>
<head>
</head>
<body>
<h2>find student</h2>
<?php
 if (isset($_POST['name']))
 {
     $studentname=$_POST['name'];
if (!$studentname)
{
    echo "Error!";
    exit;
}
if (!get_magic_quotes_gpc()){
    $studentname=addslashes($studentname);
}
@$db=mysqli_connect('localhost','2014551608','18390246526','homework1');
if (mysqli_connect_errno())
{
    echo "Error:can not connect to mysql database";
    exit;
}
$q="select *from student where name='".$studentname."'";
$result=mysqli_query($db,$q);
$rownum=mysqli_num_rows($result);
for ($i=0;$i<$rownum;$i++)
{
    $row=mysqli_fetch_assoc($result);
    echo "ID:" .$row['ID']."</br>";
    echo "name:" .$row['name']."</br>";
    echo "dept_name:" .$row['dept_name']."</br>";
    echo "tot_cred:" .$row['tot_cred']."</br>";
}
 $q_set = mysql_query($q) or die(mysql_error());
mysqli_free_result($result);
mysqli_close($db);
 }
?>
</body>
</html>

原文地址:https://www.cnblogs.com/yangxiaohong/p/5356979.html