PHP实战小案例--《信息管理系统》（附源码）

闲来无事，受老师所托写个php小案例方便讲课。单身狗的我就利用这一周六下午苦干了几个小时弄出来了，给大家分享一下呗。技术总结：1）没有mvc架构，没有用模板引擎，几乎thinkphp里的所有技术都没有用到，没办法呀，用了咋讲课？2）session技术实现登录界面和防止越权访问界面3）php连数据库mysql项目结构：效果显示：1.登录界面：2)登录成功：3)添加页面：4）修改页面：5)还有一些其他

小邱同志~

13790人浏览 · 2020-11-08 13:24:05

小邱同志~ · 2020-11-08 13:24:05 发布

闲来无事，受老师所托写个php小案例方便讲课。单身狗的我就利用这一周六下午苦干了几个小时弄出来了，给大家分享一下呗。
技术总结：
1）没有mvc架构，没有用模板引擎，几乎thinkphp里的所有技术都没有用到，没办法呀，用了咋讲课？
2）session技术实现登录界面和防止越权访问界面
3）php连数据库mysql

项目结构：
在这里插入图片描述
效果显示：
1.登录界面：

2)登录成功：

3)添加页面：

4）修改页面：

5)还有一些其他的零碎的功能，可自己去玩玩哦！
项目源码：
sql文件：

/*
SQLyog 企业版 - MySQL GUI v8.14 
MySQL - 5.5.5-10.3.7-MariaDB : Database - studb
*********************************************************************
*/


/*!40101 SET NAMES utf8 */;

/*!40101 SET SQL_MODE=''*/;

/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
CREATE DATABASE /*!32312 IF NOT EXISTS*/`studb` /*!40100 DEFAULT CHARACTER SET gbk */;

USE `studb`;

/*Table structure for table `student` */

DROP TABLE IF EXISTS `student`;

CREATE TABLE `student` (
  `id` int(5) NOT NULL AUTO_INCREMENT,
  `name` varchar(10) DEFAULT NULL,
  `sex` varchar(6) DEFAULT NULL,
  `country` varchar(20) DEFAULT NULL,
  `hobby` varchar(30) DEFAULT NULL,
  `password` varchar(30) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=12 DEFAULT CHARSET=gbk;

/*Data for the table `student` */

insert  into `student`(`id`,`name`,`sex`,`country`,`hobby`,`password`) values (1,'Mike','male','USA','basketball,football','146890'),(2,'Maria','female','USA','swim,football','146890'),(3,'liming','male','China','basketball','12'),(4,'Jane','female','Canada','swim,football','146890'),(6,'John','male','UK','swim,football','123456'),(7,'Json','male','UK','swim','146890'),(10,'kobe','male','USA','swim,basketball','146890'),(11,'admin','male','Local','swim,basketball,football','123456');

/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;

stuController.php

<?php
session_start();
if(!isset($_SESSION['user'])){
    header('Refresh:0.0001;url=login.php');
    echo "<script> alert('非法访问，小心我告你')</script>";
    exit();
}
include 'DBConn.php';

//根据所传参数判断是修改请求还是添加请求
if(isset($_POST["name"])&&isset($_POST["sex"])&&isset($_POST["country"])&&isset($_POST["hobby"])&&isset($_POST["pass"])){
    $name=$_POST["name"];
    $sex=$_POST["sex"];
    $country=$_POST["country"];
    $hobby=$_POST["hobby"];
    $hobbies=implode(",",$hobby);
    $pass=$_POST["pass"];
    if($_POST["id"]!=null){//修改
        $id=$_POST["id"];
        $sqlupdate = "UPDATE student SET NAME='$name',sex='$sex',country='$country',hobby='$hobbies',password='$pass' WHERE id=$id";
        if (mysqli_query($conn, $sqlupdate)) {
            echo "<script>alert('修改成功')</script>";
            header("Location: stuController.php");    //刷新当前页面
            mysqli_close($conn);
        } else {
            echo "Error: " . $sqlupdate . "<br>" . mysqli_error($conn);
        }
    }else{//添加
        $sql = "INSERT into student (name,sex,country,hobby,password)
    VALUES ('$name','$sex','$country','$hobbies','$pass')";
        if (mysqli_query($conn, $sql)) {
            echo  "<script>alert('新纪录插入成功')</script>";
        } else {
            echo "Error: " . $sql . "<br>" . mysqli_error($conn);
        }
    }
}
//查询，返回全部结果
$sqlselect="select id,name,sex,country,hobby from student";
$result=mysqli_query($conn, $sqlselect);
if($result->num_rows>0){
    echo "<h1>学生信息显示</h1>";
    echo "<div><h3>当前登录用户：".$_SESSION['user']."&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp";
    echo "<a class='btn' href='login.php'>退出登录</a><h3></div>";
    echo "<div><a href='student_add.php'>添加学生</a></div><br>";
    echo "<table><tr><th>姓名</th><th>性别</th><th>国家</th><th>爱好</th><th>操作</th></tr>";
    while($row=$result->fetch_assoc()){
        echo '<tr><td>'.$row["name"].'</td>
            <td>'.$row["sex"].'</td>
             <td>'.$row["country"].'</td>
                <td>'.$row["hobby"].'</td>
                <td>
                <a href="stuController.php?id='.$row["id"].'&func=delete">删除</a>'.' '.
                '<a href="student_add.php?id='.$row["id"].'&func=update">修改</a></td></tr>';
    }
    echo "</table>";
}else{
    echo "0个结果";
}
//删除业务，接受本页面传来的id参数，利用此参数删除对应记录
if(isset($_GET["id"])&&$_GET["func"]==delete){
    $id=$_GET["id"];
    $sqldelete='delete from student where id='.$id;
    if (mysqli_query($conn, $sqldelete)) {
        echo "<script>alert('删除成功')</script>";
        mysqli_close($conn);
        header("Location: stuController.php");    //刷新当前页面
    } else {
        echo "Error: " . $sqldelete . "<br>" . mysqli_error($conn);
    } 
}

mysqli_close($conn);

echo '
<style type="text/css">
body{text-align: center;}
table{
	width:600px;height:300px;
	border:1px solid black;/*设置边框粗细，实线，颜色*/
	text-align:center;/*文本居中*/
	background-color:#70DB93;
	border-collapse: collapse;/*边框重叠，否则你会看到双实线*/
    margin: auto;
}
th{
	border:1px solid black;
	color:black;
	font-weight:bold;/*因为是标题栏，加粗显示*/
}
td{
	border:1px solid black;
	color:#8E2323;
}
 a{
        font-family: Arial;
        margin: 3px;
    }
    
    a:LINK,a:VISITED {
        color:#A62020;
        padding:4px 10px 4px 10px;
        background-color:#DDD;
        text-decoration: none;
        border-top: 1px solid #EEEEEE;
        border-left: 1px solid #EEEEEE;
        border-bottom: 1px solid #717171;
        border-right: 1px solid #717171;
    }
    
    a:HOVER {
        color: #821818;
        padding: 5px 8px 3px 12px;
        background-color: #CCC;
        border-top: 1px solid #717171;
        border-left: 1px solid #717171;
        border-bottom: 1px solid #EEEEEE;
        border-right: 1px solid #EEEEEE;
    }
h1{
background-color:#678;
color:white;
text-align:center;
}
div{
    text-align:center
}
.btn {
    border: none;
    color: red;
    font-family:Arial;
    padding: 10px 24px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 10px;
    margin: 4px 2px;
    cursor: pointer;
}
</style>';
?>

student_add.php

<?php
session_start();
if(!isset($_SESSION['user'])){
    header('Refresh:0.0001;url=login.php');
    echo "<script> alert('非法访问，小心我告你')</script>";
    exit();
}
include 'DBConn.php'; ?>
<html>
<head>
	<meta charset="utf-8">
	<title>学生信息</title>
</head>
<body>
	<h1>学生信息表单</h1>
	<h3>当前登录用户：<?php echo $_SESSION['user']?></h3>
	<div>
    	<form method="post" action="stuController.php" onSubmit="return check();">
    		姓名：<input type="text" id="name" name="name"/><br/>
    		性别：
    		男<input type="radio" id="male" name="sex" value="male"/>
    		女<input type="radio" id="female" name="sex" value="female"/>
    		<br/>
    		国家：<input type="text" id="country" name="country"/><br/>
    		爱好：
    		游泳<input type="checkbox" id="h1" name="hobby[]" value="swim"/>
    		篮球<input type="checkbox" id="h2" name="hobby[]" value="basketball"/>
    		足球<input type="checkbox" id="h3" name="hobby[]" value="football"/><br/>
    		登录密码：<input type="password" id="pass" name="pass"/><br/>
    		确认密码：<input type="password" id="pass2" name="pass2"/><br/>
    	
    			<input type="hidden" id="id"  name="id" value=""/>
    		<br>
    		<input type="submit" value="提交" />
    	</form>
	</div>
	<script type="text/javascript">
		function check(){
			var pass=document.getElementById('pass').value;
			var pass2=document.getElementById('pass2').value;
			if(pass==pass2){
				return true;
			}else{
				alert("两次密码不一致");
				document.getElementById('pass').value="";
				document.getElementById('pass2').value="";
				return false;
			}	
		}
	</script>
	<?php
	if(isset($_GET["id"])&&$_GET["func"]=="update"){
	    $id=$_GET["id"];
	    $sqlSelectId="select * from student where id=".$id;
	    $result=mysqli_query($conn, $sqlSelectId);
	    $row=$result->fetch_assoc();
	    $name=$row["name"];
	    $sex=$row["sex"];
	    $country=$row["country"];
	    $hobby=$row["hobby"];
	    $hobbies=explode(",", $hobby);//将字符串按“，”，划分为数组
	    $pass=$row["password"];
	    echo "
        <script>
             document.getElementById('name').value='$name';
             document.getElementById('country').value='$country';
             document.getElementById('id').value=$id;
             document.getElementById('pass').value=$pass;
             document.getElementById('pass2').value=$pass;
        </script>";
	    
	    if($sex=='male'){
	        echo "
        <script>
             document.getElementById('male').checked=true;
        </script>";
	    }else{
	        echo "
        <script>
             document.getElementById('female').checked=true;
        </script>";
	    }
	    for($i=0;$i<count($hobbies);$i++){
	        if($hobbies[$i]=='swim'){
	            echo "
            <script>
                 document.getElementById('h1').checked=true;
            </script>";
	        }else if($hobbies[$i]=='basketball'){
	            echo "
            <script>
                 document.getElementById('h2').checked=true;
            </script>";
	        }else if($hobbies[$i]=='football'){
	            echo "
            <script>
                 document.getElementById('h3').checked=true;
            </script>";
	        }
	    }
	}
	?>
	<style type="text/css">
	   h1{
            background-color:#678;
            color:white;
            text-align:center;
         }
       body {
            height: 100%;
            width: 100%;
            border: none;
            overflow-x: hidden;
        }
       div{
       width:100%;
       text-align:center;
       }     
       
	</style>
</body>
</html>

DBConn.php

<?php
$servername = "localhost";
$username = "root";
$password = "root";
$dbname = "studb";
// 创建连接
$conn = mysqli_connect($servername, $username, $password,
    $dbname);
// 检测连接
if (!$conn) {
    die("Connectionfailed: " . mysqli_connect_error());
}

?>

<?php
if(isset($_SESSION)){
session_start();
//  这种方法是将原来注册的某个变量销毁
unset($_SESSION['admin']);
//  这种方法是销毁整个 Session 文件
session_destroy();
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>登录</title>
    <link rel="stylesheet" href="SignUpStyle.css">
    <link href="https://fonts.googleapis.com/css?familymPermanent+Marker" >
 
</head>
<body>
<div class="sign-div">
    <form class="" action="check.php" method="post">
        <h1>用户登录</h1>
        <input class="sign-text" type="text" name="user" placeholder="用户名" >
        <input class="sign-text" type="password" name="pass" placeholder="密码">
        	<h2>欢迎来到 学生信息管理系统</h2>
        <input type="submit" value="登录"/>
    </form>
 
</div>
 <style>
 	body{
    margin: 0;
    padding: 0;
    background: #487eb0;
}
.sign-div{
    width: 300px;
    padding: 20px;
    text-align: center;
    background: url(bg02.jpg);
    position:absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    overflow: hidden;
}
.sign-div h1 ,h2{
    margin-top: 100px;
    color: #fff;
    font-size: 40px;
}
.sign-div input{
    display: block;
    width: 100%;
    padding: 0 16px;
    height: 44px;
    text-align: center;
    box-sizing: border-box;
    outline: none;
    border: none;
    font-family: "montserrat",sans-serif;
}
.sign-text{
    margin:4px;
    background: rgba(255,255,255,5);
    border-radius: 6px;
}

.sign-btn:hover{
    transform:scale(0.96);
}
.sign-div a{
    text-decoration: none;
    color: #fff;
    font-family: "montserrat", sans-serif;
    font-size: 14px;
    padding: 10px;
    transition: 0.8s;
    display: block;
}
.sign-div a:hover{
    background: rgba(0,0,0,.3);
}
 </style>
 
</body>
</html>

check.php

<?php
include 'DBConn.php';
// 接收表单提交的用户名密码
$user = $_POST['user'];
$pass = $_POST['pass'];
//从数据库查询用户名和密码
$sqlsel="select name,password from student where name='$user' and password='$pass'";
$result=mysqli_query($conn, $sqlsel);
// 暂时给定合法用户为 张三 admin
if($result->num_rows==1){
    session_start();
    $_SESSION['user'] = $user;
    header("Refresh:0.0001;url=stuController.php");
    echo "<script> alert('登录成功')</script>";
    exit();
}else{
    header("Refresh:0.0001;url=login.php");
    echo "<script> alert('登录失败')</script>";
    exit();
}

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