student
head.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<ul>
<li><a href="add.php">增加</a></li>
<li><a href="show.php">删除</a></li>
<li><a href="show.php">修改</a></li>
<li><a href="show.php">查询</a></li>
</ul>
</body>
</html>
add.php
require_once("head.html");
require_once("dbop.php");
?>
if(isset($_GET['stuid'])){
require('check.php');
$vail = check();
if($vail){
$sql="INSERT INTO student (`stuid`,`name`,`sex`,`class`,`tel`)".
"VALUES('{$_GET['stuid']}','{$_GET['name']}','{$_GET['sex']}','{$_GET['class']}','{$_GET['tel']}')";
if(query($sql)==true){
echo "增加成功";
}else{
echo "增加失败";
}
}else{
echo "格式错误";
}
}
?>
<form action="add.php" method="get">
<label>学号</label>
<input type="text" name="stuid" id="" /><br />
<label>姓名</label>
<input type="text" name="name" id="name" value="" /><br />
<label>性别</label>
<input type="text" name="sex" id="" /><br />
<label>班级</label>
<input type="text" name="class" id="" /><br />
<label>电话</label>
<input type="text" name="tel" id="" /><br />
<input type="submit" value="新增加" />
</form>
check.php
function check(){
$arr = str_split($_GET['tel']);
foreach($arr as $a){
if($a<'0'||$a>'9'){
return false;
}
}
$sql = "select count(stuid) from student where stuid='{$_GET['stuid']}' ";
$ans=query($sql);
$cnts=$ans->fetch_array();
if($cnts[0]!=0){
return false;
}
return true;
}
?>
dbop.php
function query($sql){
$db=new mysqli("localhost","root","","dome");
$db->query("set names utf8");
$ret = $db->query($sql);
$db->close();
return $ret;
}
?>
del.php
require_once("dbop.php");
?>
$did = $_GET['id'];
echo $did;
$sql="delete from `student` where `id`='$did' ";
echo $sql;
query($sql);
header("Location:show.php");
?>
show.php
//查询并显示所有学生的信息
require_once("head.html");
require_once("dbop.php");
?>
$sql="select * from student";
$ans=query($sql);
?>
<table border="1px solid black ">
<tr>
<th>数据库id</th>
<th>学号</th>
<th>姓名</th>
<th>性别</th>
<th>班级</th>
<th>电话</th>
<th>功能</th>
</tr>
while($ro=mysqli_fetch_array($ans)){
?>
<tr>
<td> echo $ro['id'];?></td>
<td> echo $ro['stuid'];?></td>
<td> echo $ro['name'];?></td>
<td> echo $ro['sex'];?></td>
<td> echo $ro['class'];?></td>
<td> echo $ro['tel'];?></td>
<td><a href="del.php?id=$ro['id']; ?>" style="color: #1C86EE;">删除</a>
<a href="update.php?id=$ro['id']; ?>" style="color: #1C86EE;">修改</a></td>
</tr>
} ?>
</table>
up.php
require_once("dbop.php");
$id=$_GET['id'];
$stuid=$_POST['stuid'];
$name=$_POST['name'];
$sex=$_POST['sex'];
$class=$_POST['class'];
$tel=$_POST['tel'];
?>
$sql="update student set stuid='".$stuid."',name='".$name."',sex='".$sex."',class='".$class."',tel='".$tel.
"' WHERE id='".$id."'";
// echo $sql;
if(query($sql)){
echo "修改成功";
}else{
echo "修改失败";
}
header("Location:show.php");
?>
update.php
require_once("head.html");
require_once("dbop.php");
require('check.php');
$id=$_GET['id'];
$sql="SELECT * FROM student WHERE id='".$id."'";
$ans=query($sql);
if($ro=mysqli_fetch_array($ans)){
?>
<form action="up.php?id=$id;?> " method="post">
<label>数据库id</label>
<input type="text" name="id" id="id" value="$id;?>" disabled="disabled" /><br />
<label>学号</label>
<input type="text" name="stuid" id="" value="$ro['stuid'];?>"/><br />
<label>姓名</label>
<input type="text" name="name" id="name" value="$ro['name'];?>" /><br />
<label>性别</label>
<input type="text" name="sex" id="" value="$ro['sex'];?>"/><br />
<label>班级</label>
<input type="text" name="class" id="" value="$ro['class'];?>"/><br />
<label>电话</label>
<input type="text" name="tel" id="" value="$ro['tel'];?>"/><br />
<input type="submit" value="修改" />
</form>
}?>