单击带有相应消息的导航（不重新加载页面）

Question

我有两页：HOME和VOTE。我的目标是，当我点击VOTE导航时，它应该提示我，我无法投票（不重新加载页面）。然后，它将重定向/转到HOME页面。

我尝试了这个声明，但它重新加载页面而不是给我提示我想要的。

投票页面：

<?php
$session_id=$_SESSION['std_id'];
$sql= "select * from tbl_student WHERE std_id='$session_id'  AND std_status='Unvoted' AND validate ='Unenrolled'";
    $query = $con->query($sql); 
    $count = mysqli_num_rows($query);
if($count==1){  
echo "Sorry, You are not enrolled in this semester <br> You are no longer to vote or proceed to Cast Vote. Thank you.";// what codes should I replace for this?
echo '<META HTTP-EQUIV="Refresh" Content="0; URL=home.php">'; // what codes should I replace for this?
}
?>

Answer 1

您需要更改

echo '<META HTTP-EQUIV="Refresh" Content="0; URL=home.php">'; // what codes should I replace for this?

到

header( 'Location: home.php' );

完整代码：

<?php
$session_id=$_SESSION['std_id'];
$sql= "select * from tbl_student WHERE std_id='$session_id'  AND std_status='Unvoted' AND validate ='Unenrolled'";
    $query = $con->query($sql); 
    $count = mysqli_num_rows($query);
if($count==1){  
echo "Sorry, You are not enrolled in this semester <br> You are no longer to vote or proceed to Cast Vote. Thank you.";
header( 'Location: home.php' );
}
?>

修改

如果您需要显示消息并稍后重定向，则应使用此选项：

<?php
$session_id=$_SESSION['std_id'];
$sql= "select * from tbl_student WHERE std_id='$session_id'  AND  std_status='Unvoted' AND validate ='Unenrolled'";
$query = $con->query($sql); 
$count = mysqli_num_rows($query);
if($count==1) {
    echo "Sorry, You are not enrolled in this semester <br> You are no longer to vote or proceed to Cast Vote. Thank you.";
}
?>
<script>setTimeout(function () {
        window.location.href = "home.php";
    }, 3000);
</script>