Question

每当我在php页面中提交反馈时，它都会在数据库中记录文本，但是当我刷新页面时，mysql数据库中的数据就会重复。我的代码有什么问题？

<?php
include('session.php');

if(isset($_POST['submit'])){
    $fidbak = mysqli_real_escape_string($db,$_POST['fidbak']);
    $sql = "INSERT INTO tblfeedback VALUES ('$user_check', 
'$FirstName $MiddleName $LastName', '$fidbak')";
    $result = mysqli_query($db,$sql) or die(mysql_error());
}
?>

<!doctype>
<html>
<head>
    <link rel="stylesheet" type="text/css" href="css/feedback.css">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <form action="" method="POST">
</head>
<body>
    <div class="mainDiv">
        <div class="mainFeedback">
            <div class="fback">
                <textarea rows="20" cols="65" placeholder="What can we do?" name="fidbak"></textarea>
                <button id="subm" type="submit" name="submit">Submit</button><br><br>
                </span>
            </div>
        </div>
    </div>
    <script src="sameFunctions.js"></script>
    <script src="js/fback.js"></script>
</body>
</html>

Answer 1

在成功执行POST请求后，立即使用GET方法重定向到相同的网址。

因此，您的PHP块（处理POST请求）将如下所示：

<?php
include('session.php');

if(isset($_POST['submit'])){
    $fidbak = mysqli_real_escape_string($db,$_POST['fidbak']);
    $sql = "INSERT INTO tblfeedback VALUES ('$user_check', 
'$FirstName $MiddleName $LastName', '$fidbak')";
    $result = mysqli_query($db,$sql) or die(mysql_error());
    header('Location: ' .  $_SERVER['PHP_SELF'], true, 307);
}
?>

每次刷新php页面时，我的插入语法都会执行

1 个答案: