PHP初學者自寫學生管理系統
阿新 • • 發佈：2018-12-21
初寫 學生管理系統（初學者記錄）
1.後臺登陸頁面 <?php try { $o="mysql:host=127.0.0.1;dbname=testx"; $username="root"; $password="root"; $pdo=new pdo($o,$username,$password); $sql="select * from admin"; // echo $sql; $res=$pdo->query($sql); // var_dump($res); // die; } catch (Exception $e) { echo $e->getmessage(); } if (isset($_POST)&& !empty($_POST)) { foreach ($res as $k => $v) { if ($_POST["username"]==$v["user"] && $_POST["password"]==$v["password"]) { header("location:http://www.azey.com/xt/dl.php"); } } } ?> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>後臺登陸系統</title> </head> <body> <center> <form method="post" type="none" action=""> <ul type="none" style="margin-top: 200px;"> <li> <label>Id:</label> <input type="text" name="username"> </li> <li style="margin-top: 10px;"> <label>Password:</label> <input type="password" name="password" style="margin-left: 12px;mar"> </li> <li> <label> </label> <input type="submit" name="login" value="登入" style="margin-left: 50px;margin-top: 20px;"> </li> </ul> </form> </center> </body> </html>
2.主頁面 <?php include_once "Gn.php"; try { $o="mysql:host=127.0.0.1;dbname=testx"; $username="root"; $password="root"; $pdo=new pdo($o,$username,$password); $sql="select * from lb"; // echo $sql; $res=$pdo->query($sql); // var_dump($res); } catch (Exception $e) { echo $e->getmessage(); } ?> <!DOCTYPE html> <html lang="en"> <meta charset="UTF-8"> <head> <title>Student information management system</title> </head> <body bgcolor="#169FE9"> <center> <h3>PHP1804 student information browsing</h3> <table width="600" border="1"> <th>ID</th> <th>Name</th> <th>Sex</th> <th>Age</th> <th>Class</th> <th>add & del</th> <?php foreach ($res as $k => $v){?> <tr style="text-align: center;"> <td><?php echo $v['id'] ?></td> <td><?php echo $v['name'] ?></td> <td><?php echo $v['sex'] ?></td> <td><?php echo $v['age'] ?></td> <td><?php echo $v['class'] ?></td> <td> <a href="http://www.azey.com/po/hasaki3.php?id='<?php echo $v["id"] ?>'">Delete</a> <br> <a href="hasaki5.php?id='<?php echo $v["id"] ?>'">Modify</a> </td> </tr> <?php }?> </center> </body> </html>
3.新增 <?php error_reporting(0); try { $o="mysql:host=127.0.0.1;dbname=testx"; $username="root"; $password="root"; $pdo=new pdo($o,$username,$password); $sql="insert into Lb (name,sex,age,class) values ('".$_POST['name']."',".$_POST['sex'].",".$_POST['age'].",".$_POST['class'].")"; // echo $sql; $res=$pdo->query($sql); // var_dump($res); } catch (Exception $e) { echo $e->getmessage(); } ?> <html> <head> <title>Student information management</title> </head> <body bgcolor="#169FE9"> <center> <?php include_once "Gn.php"; ?> <h3>Add student information</h3> <form id="addstu" name="addstu" method="post" action=""> <table> <tr> <td>Name</td> <td><input id="name" name="name" type="text"/></td> </tr> <tr> <td>Sex</td> <td><input type="radio" name="sex" value="1"/> Man <input type="radio" name="sex" value="2"/> Woman </td> </tr> <tr> <td>Age</td> <td><input type="text" name="age" id="age"/></td> </tr> <tr> <td>Class</td> <td><input id="class" name="class" type="text"/></td> </tr> <tr> <td> </td> <td><input type="submit" value="提交"/> <input type="reset" value="重置"/> </td> </tr> </table> </form> </center> </body> </html>
4.刪除
<?php
try {
$o="mysql:host=127.0.0.1;dbname=testx";
$username="root";
$password="root";
$pdo=new pdo($o,$username,$password);
$sql="delete from lb where id=".$_GET['id'];
// echo $sql;
$res=$pdo->query($sql);
// var_dump($res);
} catch (Exception $e) {
echo $e->getmessage();
}
?>
5.修改
<?php
try {
$o="mysql:host=127.0.0.1;dbname=testx";
$username="root";
$password="root";
$pdo=new pdo($o,$username,$password);
$sql = "update Lb set name = '".$_POST['name']."',sex=".$_POST['sex'].",age=".$_POST['age'].",class=".$_POST['class']." where id=".$_GET['id'];
// echo $sql;
$res=$pdo->query($sql);
// var_dump($res);
} catch (Exception $e) {
echo $e->getmessage();
}
header("location:http://www.azey.com/xt/dl.php");
?>
<center>
<?php
include_once "Gn.php";
?>
</center>
<!DOCTYPE html>
<html>
<head>
<title>Student information management system</title>
<meta charset="utf-8">
</head>
<body bgcolor="#169FE9">
<center>
<form action="" method="post" enctype="multipart/form-data">
<table>
<tr>
<td>Name</td>
<td><input id="name" name="name" type="text" value=" <?php echo $rre['name'] ?> " /></td>
</tr>
<tr>
<?php if ($rre['sex']==1) { ?>
<td>Sex</td>
<td><input type="radio" name="sex" value="1"checked/> Man
<input type="radio" name="sex" value="2"/> Woman
</td>
<?php }else if($rre['sex']==2) { ?>
<td>Sex</td>
<td><input type="radio" name="sex" value="1"/> Man
<input type="radio" name="sex" value="2"checked/> Woman
</td>
</tr>
<?php } ?>
<tr>
<td>Age</td>
<td><input type="text" name="age" id="age" value="<?php echo $rre['age']; ?>"/></td>
</tr>
<tr>
<td>Class</td>
<td><input id="class" name="class" type="text" value="<?php echo $rre['class']; ?>"/></td>
</tr>
<tr>
<td> </td>
<td><input type="submit" value="提交"/>
<input type="reset" value="重置"/>
</td>
</tr>
</table>
</form>
</center>
</body>
</html>