php - 保留按钮的点击值并使用 Jquery 自动刷新

Question

我是一名入门级 php 人员。我正在尝试创建一个一对一的聊天程序，后端使用 php，客户端使用 Jquery。我的代码是这样工作的，单击按钮后，所选用户的值存储在 Jquery 变量中并传递到 PHP 端，从而显示两个用户之间的对话。现在，挑战是如何每 10 秒左右自动刷新此对话(结果)。

这是我的代码。

<ul class="nav nav-pills nav-stacked mail-nav">

<?php
    $output .= '
    <ul class="nav nav-pills nav-stacked mail-nav">
    <li><a href="#" class="getuser">
    <i class="fa fa-envelope-o fa-fw"></i>'.$user.'</a></li>
    </ul>';
?>

<div class="sender">
    <form id="theform" > 
        <input type="text" name="messages"  placeholder="Send Message">
        <button class="btn btn-primary" id="geek"><i class="fa fa-lg fa-fw fa-paper-plane"></i></button>
    </form>
</div>

这是 jquery 脚本

<script>
$(document).ready(function () {
    $(".getuser").click(function () { 
        var value = $(this).text(); 
        load_comment();

        function load_comment() {
            $.ajax({
                url:"getMessage.php",
                method: "GET",
                data: {
                    'getvalue':
                },
                success:function (data) {
                    $('.messages').html(data);
                    ///upon success scroll to bottom of message
                    $("#bottom").get(0).scrollIntoView({
                        behavior: "smooth", block: "end", inline: "nearest"}); 
                    }
                });
            setTimeout(function(){
            location.reload();
            },5000);
        }
    });
</script>

和 getMessage.php

<?php
session_start();
require_once('config.php');
$Logged=$_SESSION['t_user'];

if(isset($_GET['getvalue'])) { 
$b = $_GET['getvalue'];
//store $b in a session
$_SESSION['getvalue'] = $b;
$thread = $_SESSION['getvalue'];

$sqlf= $conn->prepare("SELECT * FROM usermessages WHERE (userto = '$b' OR 
userto = '$Logged') 
AND (userfrom = '$Logged' OR userfrom = '$b') ORDER BY timecreated ASC ");

$sqlf->execute();
$row=$sqlf->FetchALL(PDO::FETCH_ASSOC);
$output = '';

if ($sqlf)
{///updating the value of seen
$up=$conn->prepare("UPDATE usermessages SET viewed= 1 WHERE (userto = '$b' 
OR userto = '$Logged') 
AND (userfrom = '$Logged' OR userfrom = '$b')");
$up->execute();
}
?>
<?PHP
foreach ($row as $r) 
{
$sender = $r['userfrom'];
$m = $r['messages'];

///time to get the user's thumb
$stmt = $conn->prepare("SELECT * FROM employees where t_user = ? limit 1 ");
$stmt->bindParam(1, $sender);
$stmt->execute();
$th=$stmt->FetchALL(PDO::FETCH_ASSOC);
foreach ($th as $p) 
{
$thumb = $p['passport'];
}

$output .= '

<div class="message">
<img src="'.$thumb.'" width="50" height ="50">
<p class="info">'.$m.'</p>
</div>';
}
}
echo  "You are chatting with $b";
echo $output;

echo '<div id="bottom"></div>';
?>

Answer 1

只需每 10 秒调用一次 load_comment() 函数，假设 load_comment() 是对话函数。

setTimeout(function(){
load_comment();
},10000);