PHP 结合 Bootstrap 实现学生列表以及添加学生功…

2019-05-22 06:36:05来源:博客园 阅读 ()

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本人是一位学生,正在学习当中,可能BUG众多,请见谅并指正,谢谢!!!

 

 

学生列表实现

HTML:

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>学生信息</title>
    <link rel="stylesheet" type="text/css" href="css/Bootstrap.css">
</head>
<body>
    <div class="container mt-5">
        <h1 class="display-4 text-center">学生信息管理中心</h1>
        <div class="row mt-3">
            <a class="btn btn-info col-sm-2" style="margin-right: 88px; margin-left: 15px;" href="add_student.php">添加学生</a>
            <input type="text" class="form-control col-sm-6 ml-5" placeholder="请输入关键词">
              <button type="submit" class="btn btn-info col-sm-2 ml-4">点击搜索</button>
        </div>
        <table class="table table-hover table-bordered mt-3">
            <thead class="thead-inverse">
                <tr>
                    <th class="text-center align-middle">学号</th>
                    <th class="text-center align-middle">学院/系</th>
                    <th class="text-center align-middle">班级</th>
                    <th class="text-center align-middle">姓名</th>
                    <th class="text-center align-middle">性别</th>
                    <th class="text-center align-middle">年龄</th>
                    <th class="text-center align-middle">照片</th>
                    <th class="text-center align-middle">操作</th>
                </tr>
            </thead>
            <tbody class="text-center">
            <?php while ($student = mysqli_fetch_assoc($query)): ?>
                <tr>
                    <td class="align-middle"><?php echo $student['num']; ?></td>
                    <td class="align-middle"><?php echo $student['system']; ?></td>
                    <td class="align-middle"><?php echo $student['class']; ?></td>
                    <td class="align-middle"><?php echo $student['name']; ?></td>
                    <td class="align-middle"><?php echo $student['gender'] === 1 ? '♂' : '♀'; ?></td>
                    <td class="align-middle"><?php echo date('Y') - substr($student['birthday'], 0, 4); ?></td>
                    <td class="align-middle"><img src="<?php echo $student['photo']; ?>" width="100" height="70"></td>
                    <td class="align-middle"><a class="btn btn-info mr-2" href="edit.php?num=<?php echo $student['num']; ?>">编辑</a><a class="btn btn-danger ml-2" href="delete.php?num=<?php echo $student['num']; ?>">删除</a></td>
                </tr>
            <?php endwhile ?>
            </tbody>
        </table>
    </div>
</body>
</html>

PHP:

// 这里:
// 第一个参数:本地网络地址
// 第二个参数:数据库账号
// 第三个参数:数据库密码
// 第四个参数:数据库名称
$connection
= mysqli_connect('localhost', 'root', '密码', 'students_info_system'); if (!$connection) { exit('<h1>连接数据库失败</h1>'); } $query = mysqli_query($connection, 'select * from students'); if (!$query) { exit('<h1>学生数据查询失败</h1>'); } $administrator_query = mysqli_query($connection, 'select * from students');

添加学生实现

HTML:

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>添加学生</title>
    <link rel="stylesheet" type="text/css" href="css/Bootstrap.css">
</head>
<body>
    <div class="container mt-3">
        <h1 class="display-4 text-center">添加学生</h1>
        <?php if (isset($error_msg)): ?>
        <div class="alert alert-danger"><?php echo $error_msg; ?></div>
        <?php endif ?>
        <form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post" enctype="multipart/form-data" autocomplete="off">
            <div class="form-group">
                <input type="number" name="num" class="form-control" placeholder="学号" value="<?php echo isset($_POST['num']) ? $_POST['num']: ''; ?>">
            </div>
            <div class="form-group">
                <select class="form-control" name="system">
                    <option>请选择学院/系</option>
                    <option>电气工程学院</option>
                    <option>信息工程与艺术学院</option>
                    <option>国际教育学院</option>
                    <option>水利水电工程学院</option>
                    <option>测绘与市政工程学院</option>
                    <option>马克思主义学院</option>
                    <option>建筑工程学院</option>
                    <option>经济与管理学院</option>
                </select>
            </div>
            <div class="form-group">
                <input type="text" name="class" class="form-control" placeholder="班级" value="<?php echo isset($_POST['class']) ? $_POST['class'] : ''; ?>">
            </div>
            <div class="form-group">
                <input type="text" name="name" class="form-control" placeholder="姓名" value="<?php echo isset($_POST['name']) ? $_POST['name'] : ''; ?>">
            </div>
            <div class="form-group">
                <select class="form-control" name="gender">
                    <option value="-1">请选择性别</option>
                    <option <?php echo isset($_POST['gender']) && $_POST['gender'] === '1' ? 'selected' : ''; ?> value="1">男</option>
                    <option <?php echo isset($_POST['gender']) && $_POST['gender'] === '0' ? 'selected' : ''; ?> value="0">女</option>
                </select>
            </div>
            <div class="form-group">
                <label for="birthday">出生日期</label>
                <input type="date" name="birthday" class="form-control" id="birthday" value="<?php echo isset($_POST['birthday']) ? $_POST['birthday'] : ''; ?>">
            </div>
            <div class="form-group">
                <label for="photo">照片</label>
                <input type="file" name="photo" class="form-control">
            </div>
            <button class="btn btn-info btn-block">确认添加</button>
        </form>
    </div>
</body>
</html>

PHP:

function add_student () {

   $connection = mysqli_connect('localhost', 'root', '密码', 'students_info_system'); if (!$connection) { $GLOBALS['error_msg'] = '连接数据库失败'; return; } $query = mysqli_query($connection, 'select * from students'); if (!$query) { $GLOBALS['error_msg'] = '数据查询失败'; return; } // 查询已有学生 while ($student = mysqli_fetch_assoc($query)) { // var_dump($student); $students_num[] = $student['num']; } // var_dump($_FILES['photo']); // var_dump($_POST['gender']); if (empty($_POST['num'])) { $GLOBALS['error_msg'] = '请输入学号'; return; } // 判断该学号是否已经被添加(即列表中已存在该学生)========= if (in_array($_POST['num'], $students_num)) { $GLOBALS['error_msg'] = '该学生已存在'; return; } if (empty($_POST['system']) || $_POST['system'] === '请选择学院/系') { $GLOBALS['error_msg'] = '请选择学院/系'; return; } if (empty($_POST['class'])) { $GLOBALS['error_msg'] = '请输入班级'; return; } if (empty($_POST['name'])) { $GLOBALS['error_msg'] = '请输入姓名'; return; } if (!(isset($_POST['gender']) && $_POST['gender'] !== '-1')) { $GLOBALS['error_msg'] = '请选择性别'; return; } if (empty($_POST['birthday'])) { $GLOBALS['error_msg'] = '请输入出生日期'; return; } // 以下处理文件域======================================================= if (empty($_FILES['photo'])) { $GLOBALS['error_msg'] = '请上传照片'; return; } if ($_FILES['photo']['error'] !== UPLOAD_ERR_OK) { $GLOBALS['error_msg'] = '上传照片失败'; return; } // 验证上传文件的类型(只允许图片) if (strpos($_FILES['photo']['type'], 'image/') !== 0) { $GLOBALS['error_msg'] = '这不是支持的文件格式类型,请重新上传'; return; } // 文件上传到了服务端开辟的一个临时地址,需要转移到本地 $image_target = 'images/' . $_FILES['photo']['name']; if (!move_uploaded_file($_FILES['photo']['tmp_name'], $image_target)) { $GLOBALS['error_msg'] = '图片上传失败'; return; } // 接收学生信息 $num = (string)$_POST['num']; $system = (string)$_POST['system']; $class = (string)$_POST['class']; $name = (string)$_POST['name']; $gender = (int)$_POST['gender']; $birthday = (string)$_POST['birthday']; $photo = (string)$image_target; // 将数据存放到数据库 $insert_query = mysqli_query($connection, "insert into students values ('{$num}', '{$system}', '{$class}', '{$name}', {$gender}, '{$birthday}', '{$photo}')"); if (!$insert_query) { $GLOBALS['error_msg'] = '数据查询失败'; return; } $affected_rows = mysqli_affected_rows($connection); if ($affected_rows !== 1) { $GLOBALS['error_msg'] = '添加失败'; return; } // 延迟2秒 time_sleep_until(time() + 2);
  // 跳回到学生信息页面
header("Location: student_info.php"); } if ($_SERVER['REQUEST_METHOD'] === 'POST') { add_student(); }

 


原文链接:https://www.cnblogs.com/duxiu-fang/p/10886998.html
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