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php实现简单的CRUD操作

2016-06-29 21:45 483 查看 
<html>
<head>
<title>学生管理信息</title>
</head>

<body>
<center>
<?php include 'menu.php';?>
<h3>信息浏览</h3>
<table width="600" border="1">
<tr>
<td>ID</td>
<td>姓名</td>
<td>性别</td>
<td>年龄</td>
<td>班级</td>
<td>操作</td>
</tr>
<?php
//连接数据库
try {
$pdo=new PDO("mysql:host=localhost;dbname=test;","root","562436");
} catch (Exception $e) {
die("数据库连接失败".$e->getMessage());
}
//执行SQL语句
$sql='select * from cms_stu';
foreach ($pdo->query($sql) as $row){
echo "<tr>";
echo "<td>{$row['id']}</td>";
echo "<td>{$row['name']}</td>";

if($row['sex']=='m'){
echo "<td>男</td>";
}else if($row['sex']=='w'){
echo "<td>女</td>";
}
echo "<td>{$row['age']}</td>";
echo "<td>{$row['classid']}班</td>";
echo "<td><a href='javascript:doDel({$row['id']})'>删除</a> | <a href='edit.php?id={$row['id']}'>修改</a></td>";
echo "</tr>";

}

?>
</table>
</center>
</body>

<script type="text/javascript">
function doDel(id){
if(confirm('是否确定删除？')){
window.location='action.php?action=del&id='+id;
}
}
</script>
</html>


<html>
<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>
</html>


<html>
<head>
<title>学生管理信息</title>
</head>

<body>
<center>
<?php include 'menu.php';?>
<h3>增加学生</h3>
<form action="action.php?action=add" method="post">
<table>
<tr>
<td>姓名</td>
<td><input type="text" name="name" /></td>
</tr>
<tr>
<td>性别</td>
<td>
<input type="radio" name="sex" value="m"/>男
<input type="radio" name="sex" value="w"/>女
</td>
</tr>
<tr>
<td>年龄</td>
<td><input type="text" name="age" /></td>
</tr>
<tr>
<td>班级</td>
<td><input type="text" name="classid" /></td>
</tr>
<tr>
<td>
<input type="submit" value="增加" />
<input type="reset" value="重置" />
</td>
</tr>
</table>
</form>
</center>
</body>
</html>


<?php
try {
$pdo=new PDO("mysql:host=localhost;dbname=test;","root","562436");
} catch (Exception $e) {
die("数据库连接失败".$e->getMessage());
}

//操作
switch ($_GET['action']){
case "add":
$name=$_POST['name'];
$sex=$_POST['sex'];
$age=$_POST['age'];
$classid=$_POST['classid'];

$sql="insert into cms_stu values(null,'{$name}','{$sex}','{$age}','{$classid}')";

$rw=$pdo->exec($sql);
if($rw>0){
echo "<script>alert('增加成功');window.location='index.php'</script>";
}else{
echo "<script>alert('增加失败');window.history.back()</script>";
}
break;
case "del":
$id=$_GET['id'];
$sql="delete from cms_stu where id={$id}";
$pdo->exec($sql);
header("Location:index.php");
break;
case "edit":
$name=$_POST['name'];
$sex=$_POST['sex'];
$age=$_POST['age'];
$classid=$_POST['classid'];
$id=$_POST['id'];

$sql="update cms_stu set name='{$name}',sex='{$sex}',age='{$age}',classid='{$classid}' where id={$id}";
$rw=$pdo->exec($sql);
if($rw>0){
echo "<script>alert('修改成功');window.location='index.php'</script>";
}else{
echo "<script>alert('修改失败');window.history.back()</script>";
}
break;

}


\

<html>
<head>
<title>学生管理信息</title>
</head>

<body>
<center>
<?php include 'menu.php';
try {
$pdo=new PDO("mysql:host=localhost;dbname=test;","root","562436");
} catch (Exception $e) {
die("数据库连接失败".$e->getMessage());
}

$sql="select * from cms_stu where id=".$_GET['id'];
$stmt=$pdo->query($sql);
if($stmt->rowCount() >0){
$stu=$stmt->fetch(PDO::FETCH_ASSOC);
}else{
die("没有修改");
}
?>
<h3>修改学生</h3>
<form action="action.php?action=edit" method="post">
<table>
<tr>
<td>姓名</td>
<td><input type="text" name="name" value="<?php echo $stu['name']?>"/></td>
</tr>
<tr>
<td>性别</td>
<td>
<input type="radio" name="sex" value="m" <?php echo $stu['sex']=="m" ? "checked":"" ?>/>男
<input type="radio" name="sex" value="w" <?php echo $stu['sex']=="w" ? "checked":"" ?>/>女
</td>
</tr>
<tr>
<td>年龄</td>
<td><input type="text" name="age" value="<?php echo $stu['age']?>"/></td>
</tr>
<tr>
<td>班级</td>
<td><input type="text" name="classid" value="<?php echo $stu['classid']?>"/></td>
</tr>
<input type="hidden" name="id" value="<?php echo $stu['id']?>"/>
<tr>
<td>
<input type="submit" value="修改" />
<input type="reset" value="重置" />
</td>
</tr>
</table>
</form>
</center>
</body>
</html>


CREATE TABLE `cms_stu` (
`id` mediumint(6) unsigned NOT NULL AUTO_INCREMENT,
`name` varchar(20) NOT NULL DEFAULT '',
`sex` char(2) NOT NULL COMMENT '男',
`age` int(11) NOT NULL,
`classid` int(11) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;
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