javascript - 每个用户登录后显示每日消息

Question

我有一个用户可以登录的索引页面，他们被重定向到 dashboard.php，我已经开始了一个 session

require_once("config.php");
if (!isset($_SESSION["user_id"]) || $_SESSION["user_id"] == "") {
// not logged in send to login page
redirect("index.php");

我想显示一条每日消息(每个成员每天只显示一次) 我还编码为仅从特定 ip 可见。

这就是我所拥有的，但它不起作用...它使用 cookie，我相信如果我需要为每个成员发送每日消息，我还需要其他东西。

 <div id="test">
<?php  
    $allow = array("84.232.237.169","188.24.146.118"); //allowed IPs

    if(!in_array($_SERVER['REMOTE_ADDR'], $allow) && !in_array($_SERVER["HTTP_X_FORWARDED_FOR"], $allow) && !in_array($_SERVER["HTTP_CLIENT_IP"], $allow))  {  ?>
<?php } else { ?>
<script>
$(document).ready(function() {
  $('#welcome-modal').modal('show');
  setTimeout(function() {
    $('#welcome-modal').modal('hide');
  }, 60000);
});
</script>
<div id="user">
    <div id="welcome-modal" class="modal" tabindex="-1" role="dialog">
        <div class="modal-dialog" role="document">
            <div class="modal-content">
                <div class="modal-body" align="center">
                    <p>
                    <font size="6">
                    <div align="center"></div>Salut, Nu uita sa te pontezi! <br><br>

                        Click <a href="pontajianuarie.php">AICI</a> pentru a te ponta!

                    </div>
                    </font>
                    </p>
                </div>
            </div>
        </div>
    </div>
</div> 
    <?php
    }
?>
</div>
<input type="button" value="Delete Cookie" onclick="deleteCookie()"/>
<script>
// 'Delete' cookie for testing
function deleteCookie()
{
if(typeof(Storage) !== "undefined"){
    sessionStorage.returnVisit = "false";
    console.log("sessionStorage set.");
}
else{
    setCookie("return_visit","false",1);
}
}

//W3 Schools setCookie function
function setCookie(c_name,value,exdays)
{
  var exdate=new Date();
  exdate.setDate(exdate.getDate() + exdays);
  var c_value=escape(value) + ((exdays==null) ? "" : "; expires="+exdate.toUTCString());
  document.cookie = c_name + "=" + c_value;
}

//W3 Schools getCookie function
function getCookie(c_name)
{
  var c_value = document.cookie;
  var c_start = c_value.indexOf(" " + c_name + "=");
  if (c_start == -1)
  {
    c_start = c_value.indexOf(c_name + "=");
  }
  if (c_start == -1)
  {
    c_value = null;
  }
  else
  {
    c_start = c_value.indexOf("=", c_start) + 1;
    var c_end = c_value.indexOf(";", c_start);
    if (c_end == -1)
    {
      c_end = c_value.length;
    }
  c_value = unescape(c_value.substring(c_start,c_end));
 }
return c_value;
}

//Check return_visit cookie on page load
function bodyOnload()
{
if(getCookie("return_visit") === 'true' || sessionStorage.returnVisit === "true"){
    //Do something if user has already visited page
            var test = document.getElementById("test");
    test.innerHTML = "";
}
else
{
    if(typeof(Storage) !== "undefined"){
        sessionStorage.returnVisit = "true";
        console.log('Session Storage set.');
    }
    else{
        setCookie("return_visit","true",1);
    }
}
}

</script>

编辑:

<?php


require_once("config.php");
if (!isset($_SESSION["user_id"]) || $_SESSION["user_id"] == "") {
    // not logged in send to login page
    redirect("index.php");
}

?>
<?php
$servername = "localhost";
$username = "highmob";
$password = "pass";
$dbname = "highmob_comenzi";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
} 

function show_message($user_id) {
    $sql = "SELECT * FROM DAILY_MESSAGES  WHERE user_id = ".$_SESSION['user_id'] . "";
    $result = $conn->query($sql);

    if ($result->num_rows > 0) {
        while($row = $result->fetch_assoc()) {
          if($row['date'] == date('Y-m-d')) {
           if($row['used']==0) {
             echo $row['message'];
            }
          }
       }
    } 
}


function update_message_status($user_id) {
        $sql = 'UPDATE DAILY_MESSAGES SET used=1 WHERE '.$_SESSION['user_id'] . "";
        $conn->query($sql);
    }

?>

我还创建了名为 DAILY_MESSAGES 的数据库表 ID = AI消息， 用户身份， 用过的， 创建于

我没有收到任何消息或任何数据库更新？

Answer 1

您可以使用数据库，例如，如果您使用的是 mysql，则可以创建一个具有以下结构的表 DAILY_MESSAGES:

ID: int AI
message: string
user_id: int
used: int
created_at: date

假设如果用户进入您的仪表板，您将打印消息并更新使用的字段，例如

function show_message($user_id) {
    $sql = 'SELECT * FROM daily_messages WHERE user_id='.$user_id;
    $result = $conn->query($sql);

    if ($result->num_rows > 0) {
        while($row = $result->fetch_assoc()) {
          if($row['date'] == date('Y-m-d')) {
           if($row['used']==0) {
             echo $row['message'];
            }
          }
       }
    } 
}

和更新

   function update_message_status($user_id) {
        $sql = 'UPDATE daily_messages SET used=1 WHERE '.$user_id;
        $conn->query($sql)
    }