Question

我有一个我从数据库构建的html表：

<tr onclick="DoNav('<?php echo $result_videos[$i]["video_url"]; ?>');">
    <td>
        <?php echo $result_videos[$i]["camera_name"]; ?> 
    </td>
    <td>
      Timezone: <?php echo queryTimezone(); ?> <br> 
      Video Size: <?php echo $result_videos[$i]["video_size"]; ?> bytes <br>
          Video Length: <?php echo strTime($result_videos[$i]["video_length"]); ?>
    </td>
    <td>
        <form name="myform" action="<?php echo htmlentities($_SERVER['REQUEST_URI']); ?>" method="POST">
        <input type="submit" name="delete_video" value="Delete" title="Delete this video" onClick="return confirm('Are you sure you want to delete?')"/>
        <input type="hidden" name="video_url" value="<?php echo $result_videos[$i]["video_url"]; ?>" />
        </form>
    </td>
</tr>

问题在于这个功能：

function queryTimezone()
{ 
$query = "SELECT timezone FROM #__camcloud_users WHERE user_id=".$user->id;
$db->setQuery($query);
$timezone = $db->loadResult();
return $timezone;
}

它把桌子搞得一团糟。我似乎没有得到任何PHP错误，它在“时区：”部分切断表格，并将其扔到页面的右上角。基本上我称之为函数queryTimezone。如果我改为将其放在html表中，它可以正常工作：

<tr onclick="DoNav('<?php echo $result_videos[$i]["video_url"]; ?>');">
    <td>
        <?php echo $result_videos[$i]["camera_name"]; ?> 
    </td>
    <td>
      Timezone: <?php 
$query = "SELECT timezone FROM #__camcloud_users WHERE user_id=".$user->id;
$db->setQuery($query);
$timezone = $db->loadResult();
echo $timezone;
?> <br> 
      Video Size: <?php echo $result_videos[$i]["video_size"]; ?> bytes <br>
          Video Length: <?php echo strTime($result_videos[$i]["video_length"]); ?>
    </td>
    <td>
        <form name="myform" action="<?php echo htmlentities($_SERVER['REQUEST_URI']); ?>" method="POST">
        <input type="submit" name="delete_video" value="Delete" title="Delete this video" onClick="return confirm('Are you sure you want to delete?')"/>
        <input type="hidden" name="video_url" value="<?php echo $result_videos[$i]["video_url"]; ?>" />
        </form>
    </td>
</tr>

这很好用。我是如何调用函数的？

Answer 1

该函数无法确定$ user-＆gt; id，因此无法返回有效结果...函数中没有定义$ user是什么

Answer 2

请改用他的功能声明：

function queryTimezone($user,$db)
{ 
   $query = "SELECT timezone FROM #__camcloud_users WHERE user_id=".$user->id;
   $db->setQuery($query);
$timezone = $db->loadResult();
return $timezone;
}

这样打电话：

Timezone: <?php echo queryTimezone($user,$db); ?> <br>

php函数调用搞砸了表

2 个答案: