我正在创建一个简单的PHP和SQL来执行列表应用程序。我的问题是,每次我编辑一行时,它会创建另一行,而不是只编辑现有行。下面是一些从的index.php代码:每次我编辑一行时,它会创建另一行
<?php
$current_date = date("Y-m-d");
if ($_SERVER['REQUEST_METHOD'] == 'POST'){
$task = isset($_POST['task']) ? $_POST['task'] : null;
$importance = isset($_POST['importance']) ? $_POST['importance'] : null;
$due_date = isset($_POST['due_date']) ? $_POST['due_date'] : null;
$order = isset($_POST['order']) ? $_POST['order'] : null;
if(isset($task,$importance,$due_date,$user_name)){
$sql = "INSERT INTO tasks (task, importance, due_date, user_name) VALUES ('$task', '$importance', '$due_date', '$user_name')";
$result = mysqli_query($connection, $sql) or die(mysqli_error($connection));
}
}
?>
<?php
while($column = mysqli_fetch_assoc($result)){
?>
<tr><td><?php echo $column["task"]?></td><td class="<?php echo $column["importance"] ?>"><?php echo $column["importance"]?></td><?php if($column["due_date"]<$current_date){echo '<td class="overdue">';}else{echo '<td class="not_overdue">';} ?><?php echo $column["due_date"]?></td><td><?php echo "<a href='edit.php?id=".base64_encode($column['task_id'])."'>Edit</a>" ?></td><td><?php echo "<a href='delete_one.php?id=".base64_encode($column['task_id'])."' onclick=\"return confirm('Are you sure?')\">Delete</a>" ?></td></tr>
<?php
}
?>
下面是一些从edit.php代码:
<?php
if($_GET['id'] != ""){
$task_id = $_GET['id'];
$task_id = base64_decode($task_id);
$sql = "SELECT * FROM tasks WHERE task_id='$task_id'";
$result = mysqli_query($connection, $sql) or die(mysqli_error($connection));
}
?>
<?php
}
?>
<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST'){
$task = isset($_POST['task']) ? $_POST['task'] : null;
$importance = isset($_POST['importance']) ? $_POST['importance'] : null;
$due_date = isset($_POST['due_date']) ? $_POST['due_date'] : null;
if(isset($task,$importance,$due_date)){
$sql = "UPDATE tasks SET task='$task', importance='$importance', due_date='$due_date' WHERE task_id='$task_id'";
$result = mysqli_query($connection, $sql) or die(mysqli_error($connection));
}
}
?>
谁能告诉我什么,我做错了什么?
假设你有一个'insert'的地方,你应该有'update'的地方。 –
这是否意味着旧记录**和**新记录都在数据库中?只能用触发器 –
@GordonLinoff edit.php中没有任何插入语句。 – Julian