Php 如何在表中添加按钮
现在我有一个页面，显示老师从数据库中设置的家庭作业。学生必须能够在这一页上看到他们的所有作业，以及截止日期和设定日期。到目前为止，它正在工作，在到期日之后，任务变为红色，这很好。但是，我现在需要添加一个小框或按钮，学生完成任务后可以单击该框或按钮。一旦完成，它将仅为单击它的学生删除它Php 如何在表中添加按钮,php,html,sql,Php,Html,Sql,现在我有一个页面，显示老师从数据库中设置的家庭作业。学生必须能够在这一页上看到他们的所有作业，以及截止日期和设定日期。到目前为止，它正在工作，在到期日之后，任务变为红色，这很好。但是，我现在需要添加一个小框或按钮，学生完成任务后可以单击该框或按钮。一旦完成，它将仅为单击它的学生删除它 <?php include_once("connection.php"); //including the database connection file $id= $_GET['i
<?php
include_once("connection.php"); //including the database connection file
$id= $_GET['id'];
$result = $conn->prepare("SELECT * FROM homework WHERE class_id=? ORDER BY datedue DESC");
$result->bind_param("i", $id);
$result->execute();
$result2 = $result->get_result();?>
<html>
<head>
<title>View IS</title>
</head>
<body>
<table width='80%' border=0>
<tr bgcolor='#CCCCCC'>
<td>Task</td>
<td>Date Set </td>
<td>Date Due </td>
<td><button type="button">Click Me!</button></td>
</tr>
<?php
while($res = mysqli_fetch_array($result2)) {
if (strtotime(date("d-m-Y")) > strtotime($res['datedue'])) {
echo "<tr style=\"color: red;\">";
echo "<td>".$res['description']."</td>";
echo "<td>".$res['dateset']."</td>";
echo "<td>".$res['datedue']."</td>";
echo "<td>".<button type=button>Click Me!</button>."</td>";
echo "</tr>";
} else {
echo "<tr>";
echo "<td>".$res['description']."</td>";
echo "<td>".$res['dateset']."</td>";
echo "<td>".$res['datedue']."</td>";
echo "<td>".<button type=button>Click Me!</button>."</td>";
echo "</tr>";
}
}
?>
</table>
</body>
我无法测试这个，您能试试看，如果出现错误请告诉我吗 在作业表中创建新字段名“stud_completed” 家庭作业.php页面 taskdone.php页面
一旦完成，它将删除它。如果你这样做，任务将被删除所有学生，那么没有完成任务的学生呢。是的，我的错，这就是我的意思。我将重新编写我的问题。听起来像是用户的一个更新…在这种情况下，我要做的是添加一个额外的列，如student_complete，使用单击的每个学生ID作为数组更新该列。因此，您可以检查数组中是否存在学生ID，并删除家庭作业表loopOK中的该行！！让我在几分钟内给出答案我的会话由于某种原因无法工作，所以我只是将学生ID放在url中，而不是$Log\u student=$\u GET['studid'；然后在底部，好的。这将很好，但现在，它只是一个空白页，当我按下任务完成，url变成和它的空白。但是你帮了我很多，从我的评论中很难理解什么不起作用。好啊很乐意帮忙
<?php
include_once("connection.php"); //including the database connection file
$id = $_GET['id'];
$result = $conn->prepare("SELECT * FROM homework WHERE class_id=? ORDER BY datedue DESC");
$result->bind_param("i", $id);
$result->execute();
$result2 = $result->get_result();
$todayDate = strtotime(date("d-m-Y"));
$Log_student = $_SESSION['studentID'];
?>
<html>
<head>
<title>View IS</title>
</head>
<body>
<table width='80%' border=0>
<tr bgcolor='#CCCCCC'>
<td>Task</td>
<td>Date Set </td>
<td>Date Due </td>
<td>Action</td>
</tr>
<?php
while($res = mysqli_fetch_array($result2)) {
$redDueTask = null; // each loop $redDueTask will be set to NULL
$homeworkID = $res['id']; // Get the DueDate of each task
$dueDate = strtotime($res['datedue']); // Get the DueDate of each task
if ($todayDate > $dueDate) { $redDueTask = 'style="color: red;"'; } // Set $redDueTask if task has past duedate
$student_completed = explode(',',$res['stud_completed']); // get the coma seperated completed student list and convert it to array
if (!in_array($Log_student, $student_completed)) { // chk if logged in student ID is in array and if not in the list show task
?>
<tr <?php echo $redDueTask?>>
<td><?php echo $res['description']?></td>
<td><?php echo $res['dateset']?></td>
<td><?php echo $res['datedue']?></td>
<td>
<?php if (isset($redDueTask)) { // $redDueTask will bset if the task duedate has passed, so no need compelete button ?>
Time UP!
<?php } else { // $redDueTask is not set then show compelete button ?>
<a href="taskdone.php?tid=<?php echo $homeworkID ?>"><button type='button'>Have Complete</button></a>
<?php } ?>
</td>
</tr>
<?php
}
}
?>
</table>
</body>
<?php
include_once("connection.php"); //including the database connection file
$tid = $_GET['tid']; // Get Homework Task ID from URL
$Log_student = $_SESSION['studentID']; // Get Loggedin Student ID from Session
// Get ROW Statment
$result = $conn->prepare("SELECT * FROM homework WHERE id=?");
$result->bind_param('i', $tid);
$result->execute();
$result2 = $result->get_result();
$res = mysqli_fetch_array($result2);
$stud_completed = $res['stud_completed']; // Get the current List of completed student
if ($stud_completed == "") { // If stud_completed is null or blank
$stud_completed = $Log_student; // add the current student ID with out coma
} else {
$stud_completed .= "," . $Log_student; // Inculde the current logged in student ID with coma
}
// Update ROW Statement
$sql = "UPDATE homework SET stud_completed=? WHERE id=?";
$stmt = $conn->prepare($sql);
$stmt->bind_param('i', $stud_completed, $tid);
if ($stmt->execute()) {
header("homework.php"); // if GOT updated go to home work task list page
}
?>