Question

我在提交后编写了一条消息，有一些麻烦。

以下是代码：

<?php
    if(isset($_POST['selected_name'])){
        $stmt = $mysqli->prepare("DELETE FROM artikel WHERE anr=?");
        $stmt->bind_param('i', $_POST['selected_name']);
        $stmt->execute();
        $stmt->close();
    }else{
        echo "<h2>Artikel gelöscht!</h2>";
        header ("refresh:3; url=e3_artikel_loeschen.php");
    }
?>
<form action="" method="POST">
    <p>Artikel:
        <?php
            $stmt = $mysqli->prepare("SELECT anr, name FROM artikel");
            $stmt->execute();
            $stmt->bind_result($anr, $name);
            echo "<select name='selected_name'><br />";
            while ($stmt->fetch()) {
                echo '<option value='.$anr.'>'.$anr.' | '.$name.'</option>';
            }
            echo "</select>";
        ?>
        <input type="submit" name="submit" value="Datensatz löschen" />
    </form>
</body>
</html>

我意识到这样的消息总是在那里而且不会消失。我希望对它进行编码，以便在提交后只显示消息，然后返回主页面。谢谢您的帮助。

Answer 1

您尝试在发送标题后发送标题（通过echo消息）。将header行放在echo之前，它应该有效。

附注：如果您计划维护的代码多于此类代码，请了解如何从视图中分离模型和控制器。学习和使用PSR-1和PSR-2也不会受到伤害。

Answer 2

echo '<script>
alert("You have selected '.$language.'");
window.location = "'.$SITE_URL.'index.php?view=view_service."
</script>';

Answer 3

<?php
$con=mysqli_connect("localhost","root","","db");
// Check connection
if (mysqli_connect_errno()) {
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
}

// escape variables for security
$name = mysqli_real_escape_string($con, $_POST['name']);
$email = mysqli_real_escape_string($con, $_POST['email']);
$password = mysqli_real_escape_string($con, $_POST['password']);
$phoneno = mysqli_real_escape_string($con, $_POST['phoneno']);
$status = mysqli_real_escape_string($con, $_POST['status']);

$sql = "SELECT * FROM register WHERE email='".$email."' AND status='1'";
$result = mysqli_query($con, $sql); 
if (mysqli_num_rows($result) > 0)
    {
        $errormsg="email already exist";
    }
else{
$sql="INSERT INTO register (name,email,password,phoneno,status) VALUES ('$name','$email','$password','$phoneno','1')";
        if (!mysqli_query($con,$sql)) 
            {
                die('Error: ' . mysqli_error($con));
            }
        exit;
mysqli_close($con);
}
?>
<form role="form" action="" autocomplete="off" method="POST">

    <div class="input-group">
        <span class="input-group-addon"><i class="fa fa-user"></i></span>
            <input type="name" class="form-control" name="name" placeholder="Company Name" required>
    </div>
    <span class="help-block"></span>

    <div class="input-group">
        <span class="input-group-addon"><i class="fa fa-user"></i></span>
            <input type="email" class="form-control" name="email" placeholder="email address" required>
    </div>
    <?php echo $errormsg;?></span>

    <div class="input-group">
        <span class="input-group-addon"><i class="fa fa-lock"></i></span>
            <input  type="password" class="form-control" name="password" placeholder="Password" required>
    </div>
    <span class="help-block"></span>

    <div class="input-group">
        <span class="input-group-addon"><i class="fa fa-user"></i></span>
            <input type="tel" id="tel" class="form-control" name="phoneno" pattern="\d{10}" placeholder="Please enter a ten digit phone number" required />
    </div>
    <span class="help-block"></span>
    <input class="form-control" value="" type="hidden" name="status">

    <button class="btn btn-lg btn-primary btn-block" name="submit" type="submit">Sign Up</button>

</form>

Answer 4

在这种情况下，您可以使用javascript进行重定向，延迟时间为2秒：

echo "<h2>Artikel gelöscht!</h2>";

echo '<script>setTimeout(function () {
   window.location.href = "e3_artikel_loeschen.php""; 
}, 2000); </script>';

Answer 5

<击> 移动

<击>

echo "<h2>Artikel gelöscht!</h2>";
header ("refresh:3; url=e3_artikel_loeschen.php");

内部

if(isset($_POST['selected_name'])){}

并将其重新排序为

header ("refresh:3; url=e3_artikel_loeschen.php");
echo "<h2>Artikel gelöscht!</h2>";

<击> 更新：试试这个

<?php 
if($_SERVER['REQUEST_METHOD']=='POST' && isset($_POST['selected_name'])) {
        $stmt = $mysqli->prepare("DELETE FROM artikel WHERE anr=?");
        $stmt->bind_param('i', $_POST['selected_name']);
        $stmt->execute();
        $stmt->close();
        header ("refresh:3; url=e3_artikel_loeschen.php");
        echo "<h2>Artikel gelöscht!</h2>";   
}
?>

PHPFIDDLE EXAMPLE

Answer 6

我用这种方式解决了我的问题：

我在主页外写了一段代码：

<!DOCTYPE html>
<html>
<meta http-equiv="content-type" content="text/html" />
<meta charset="utf-8" />
<?php
require_once("db.inc.php");
?>
<link rel="stylesheet" type="text/css" href="styles2.css" />
</head>
<body>
<form action="loeschen.php"  method="POST">
<p>Artikel:
 <?php
$stmt = $mysqli->prepare("SELECT anr, name FROM artikel");
$stmt->execute();
 $stmt->bind_result($anr, $name);
echo "<select name='selected_name'><br />";
while ($stmt->fetch()) {
echo '<option value='.$anr.'>'.$anr.' | '.$name.'</option>';

}

echo "</select>";

?>
<input type="submit" name="submit" value="Datensatz löschen" />
</form>
</body>
</html>

这是主页的代码：

{{1}}

希望这对其他人也有帮助。

提交后的消息

6 个答案: