php+script实现简单的学生管理系统
学了php后写了一个简单的学生管理系统，因为就是一个简单的练习样式都没怎么写。
数据库用的是MySQL，用pdo链接的数据库。
数据库的格式为：
| id | int | |
| name | varchar | 50 |
| sex | varchar | 2 |
| age | tinyint | |
| class | varchar | 50 |
php文件一共6个。分别是
1、index.php主要是罗列学生的信息
<div> include_once('menu.php');?> <table border="1" align="center" width=90%> <caption><h1>浏览学生信息h1>caption> <tr bgcolor="#cccccc"> <th>IDth><th>姓名th><th>性别th><th>年龄th><th>班级th><th>操作th> tr> //链接数据库 try{ $pdo = new PDO("mysql:dbname=mydatabase;host=localhost","root",""); }catch(PDOException $e){ die("数据库链接失败".$e->getMessage()); } //查询信息 $sql = "select * from student"; $result = $pdo->query($sql); foreach($result as $row){//循环罗列学生的信息 echo '2、menu.php主要是头部的一些操作菜单和一些简单的样式'; echo " '; } ?> table> div> <script> function doDel(id) {//当用户要删除信息的时候，弹出框，同时向删除也传递一个参数 if (confirm("确定要删除吗？")) { window.location = 'action.php?action=del&id=' + id; } } script>{$row['id']} "; echo "{$row['name']} "; echo "{$row['sex']} "; echo "{$row['age']} "; echo "{$row['class']} "; echo "]})'>删除 ]}')'>修改 "; echo '
<style> div{ text-align: center; } #search{ float: right; } style>
<body> <h2>学生信息管理h2> <a href="index.php">浏览学生信息a> <a href="add.php">增加学生信息a> <form action="search.php?_=1" method="post" id="search"> <input type="text" name="search"> <button type="submit">查找button> form> <hr> body>3、action.php主要是对数据库的增、删、改。
//链接数据库
try{
$pdo = new PDO("mysql:dbname=mydatabase;host=localhost","root","");
}catch(PDOException $e){
die("数据库链接失败".$e->getMessage());
}
//通过action来操作
switch($_GET['action']){
case "add"://为添加操作
$name = $_POST['name'];
$sex = $_POST['sex'];
$age = $_POST['age'];
$class = $_POST['class'];
$sql1 = "insert into student values(null,'$name','$sex','$age','$class')";
$res1 = $pdo->exec($sql1);
if($res1){
echo "";
}else{
echo "";
}
break;
case "del"://删除操作
$id = $_GET['id'];
$sql2 = "delete from student where id = {$id}";
$pdo->exec($sql2);
header('location:index.php');
//用echo会闪
// echo "";
break;
case "edit":
$name = $_POST['name'];
$sex = $_POST['sex'];
$age = $_POST['age'];
$class = $_POST['class'];
$id = $_POST['id'];
$sql3 = "update student set name = '{$name}',sex = '{$sex}',age = {$age},class={$class} where id = {$id}";
$res3 = $pdo->exec($sql3);
if($res3>0){
echo "";
}else{
echo "";
}
break;
} 4、add.php主要是添加学生信息
include_once('menu.php');?>
<h3>添加学生信息h3>
<form action="action.php?action=add" method="post">
<label for="stuName">姓名:label>
<input type="text" name="name" id="stuName"><br><br>
性别:<input type="radio" name="sex" value="m" checked>男
<input type="radio" name="sex" value="w">女<br><br>
<label for="stuAge">年龄:label>
<input type="text" name="age" id="stuAge"><br><br>
<label for="stuClass">班级:label>
<input type="text" name="class" id="stuClass"><br><br>
<input type="submit" value="添加">
<input type="reset" value="重置">
form>
div> 5、edit.php修改学生信息
<div> include_once('menu.php'); //链接数据库 try{ $pdo = new PDO("mysql:dbname=mydatabase;host=localhost","root",""); }catch(PDOException $e){ die("数据库链接失败".$e->getMessage()); } //拼装sql语句，来去信息然后放到标签里 $sql = "select * from student where id=".$_GET['id']; $stmt = $pdo->query($sql); if($stmt->rowCount() > 0){ $list = $stmt->fetch(PDO::FETCH_ASSOC); //解析数据 }else{ die("没要有修改的数据"); } ?> <h3>修改学生信息h3> <form action="action.php?action=edit" method="post"> <input type="hidden" name="id" value="$list['id'];?>"> <label for="stuName">姓名:label> <input type="text" name="name" id="stuName" value="$list['name'] ?>"><br><br> 性别:<input type="radio" name="sex" value="m" ($list['sex']=='m') ? 'checked' : ''?>>男 <input type="radio" name="sex" value="w" ($list['sex']=='w') ? 'checked' : ''?>>女<br><br> <label for="stuAge">年龄:label> <input type="text" name="age" id="stuAge" value="$list['age'] ?>"><br><br> <label for="stuClass">班级:label> <input type="text" name="class" id="stuClass" value="$list['class']?>"><br><br> <input type="submit" value="修改"> <input type="reset" value="重置"> form> div>6、search.php主要是当在input输入框查找特定的学生信息的时候跳转的网页
<script> function doDel(id) { if (confirm("确定要删除吗？")) { window.location = 'action.php?action=del&id=' + id;//中间不能有空格不然会失败 } } script>
<div> include_once('menu.php'); ?> <table border="1" align="center" width=90%> <caption><h1>浏览学生信息h1>caption> <tr bgcolor="#cccccc"> <th>IDth> <th>姓名th> <th>性别th> <th>年龄th> <th>班级th> <th>操作th> tr> //链接数据库 try { $pdo = new PDO("mysql:dbname=mydatabase;host=localhost", "root", ""); } catch (PDOException $e) { die("数据库链接失败" . $e->getMessage()); } $search = $_POST['search']; $sql = "select * from student where name = '{$search}'"; $result = $pdo->query($sql); foreach ($result as $row) { echo ''; echo " '; } ?> table> div>{$row['id']} "; echo "{$row['name']} "; echo "{$row['sex']} "; echo "{$row['age']} "; echo "{$row['class']} "; echo "]})'>删除 ]}')'>修改 "; echo '