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所以我有一个基本的 php 页面，它调用另一个包含我的 mysql 查询和输出的 php 页面。很简单。我正在使用下面的 jquery refresh 语句来自动刷新查询所在的 div：

 <script type="text/javascript">
var auto_refresh = setInterval(
function ()
{
$('#records').load('user_records.php').fadeIn("slow");
}, 30000); // refresh every 30 seconds
</script>

这是我的 user_records.php 文件：

<?php
$username = $_GET['user'];
include('connect.php');
$did = array();
$sql = "SELECT * FROM users WHERE username = '$username'";  
    $result = mysqli_query($link, $sql, MYSQLI_STORE_RESULT);
while($row = $result->fetch_assoc()){
        $user_id = $row['id'];
}
$sql = "SELECT * FROM assign_did WHERE user_id = '$user_id'";  
    $result = mysqli_query($link, $sql, MYSQLI_STORE_RESULT);
while($row = $result->fetch_assoc()){
        $did_id = $row['did_id'];
          $sql1 = "SELECT did FROM did WHERE id = '$did_id'";  
              $result1 = mysqli_query($link, $sql1, MYSQLI_STORE_RESULT);
          while($row1 = $result1->fetch_row()){
                  $did[] = $row1[0];                  
          }
}
$did_arr = array();
foreach($did as $newdid){
    $did_arr[] = '`extension` LIKE \'%'.$newdid.'\'';
}
echo "<div id='records'><h1 align='center'>Today's Transfers</h1>
<table cellspacing='0' cellpadding='0'>
<tr>
<th> Customer Name</th><th>Phone Number</th><th>Disposition</th><th>DID</th><th>Date Called</th>
</tr>
";
$sql3 = 'SELECT * FROM `vicidial_did_log` WHERE ('.implode(" OR ", $did_arr) . ')'; 
    $result3 = mysqli_query($link, $sql3, MYSQLI_STORE_RESULT);
   while($row3 = $result3->fetch_assoc()){
        $caller_id_number = $row3['caller_id_number'];
        $extension = $row3['extension'];
...echo the rows into rows and columns...
?>

因此，它会刷新 user_records.php，其中包含 id 为“records”的 div。那个 div 执行 mysql 查询并且 echos 是。我的问题是，当它刷新时，查询只是空白。它刷新了 div，因为在查询开始和开始输出之前我有一些回显/输出的东西。不知道我在这里做错了什么或者你们需要看什么代码。我希望有人能帮帮忙。谢谢你。

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