如何摆脱使用PHP创建的表格之外的额外换行符?

时间:2018-01-24 14:10:04

标签: php css html5 mysqli html-table

我刚开始用PHP编码。我遇到了一个问题,我无法用网上找到的任何解决方案来解决。

我正在尝试显示一个包含已在论坛上创建的主题的表。我最初创建了一个静态html代码来查看表的结果。一切都很好。问题是当我创建动态表时。我的意思是,使用PHP语言用MySQL数据库中的信息更新表。

当我使用PHP创建表时,表格显示为中间一半(表格上方的空白区域)。我检查了我在网上找到的不同解决方案,但目前我还有问题。在检查Chrome上的页面时,我发现有几十个 br ,我不完全了解它们的来源。在我正在编写的代码中,该区域中没有任何 br ,但浏览器正在解释导致添加大量 br (确切地说是45)的内容。我试过Firefox,同样的事情发生了。

我已阅读过有关从代码中删除大写字母或空格的信息。将边距和填充设置为零(显然没有效果)。我不知道是什么导致额外的 br

这里有代码。我使用的是html5,css3,PHP ver。 7.1.11和MySQL。

<?php
include 'connection.php';
session_start();
$user=$_SESSION['logged_username'];
$unread_messages = $connection -> query ("SELECT unread_messages FROM userlist WHERE username ='$user'") or die ("Connection has failed.");

echo "This is the homepage." . '<br/>' . '<br/>';
echo "Session started as: " . 
     '<b>' . $_SESSION['logged_username'] . '</b>' . 
     " (" . 
     '<a href="logout.php">Cerrar sesión</a>' 
     . ")" . '<br/>';

//shows the number of unread messages
while($variable = $unread_messages->fetch_assoc())
{$_SESSION['message_amount'] = $variable['unread_messages'];}
?>

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<p style="display: inline-block;">Unread messages: </p><a style="display: inline-block;" href="mensajes.php"><?php echo $_SESSION['message_amount']; ?>
</a>
<a href=""></a>

<br><br>
<a href="post_thread.php" style="text-decoration: none; background-color: green; padding: 5px 10px; color: white;">Create new thread</a>

<hr>
<center><div>Lastest published threads</div></center>
<?php 
echo '<table style="width:100%; margin:0; padding:0; top:0; valign:top; border-collapse:collapse;">';
    echo '<tr>';
        echo '<th align="center" width="5%" bgcolor="#f5f5f5">Hour</th>';
        echo '<th align="center" width="85%" bgcolor="#f5f5f5">Thread title</th>';
        echo '<th align="center" width="10%" bgcolor="#f5f5f5">Author</th>';
    echo '</tr>';

    //obtain the highest index from column 'id_thread' (highest = more recent thread).
    $idthreat_result=mysqli_query($connection, "SELECT MAX(id_thread) FROM threads");
    $row=mysqli_fetch_array($idthreat_result);

    $mostrecent_thread = $row[0]; //stores the id of the most recent thread

    //shows in first place the most recent thread
    for ($i=$mostrecent_thread; $i > 0 ; $i--) 
    {   
        //obtains information from database
        //HOUR
        $result_creationhour=mysqli_query($connection, "SELECT creation_hour FROM threads WHERE id_thread='$i'");
        $row_hour=mysqli_fetch_array($result_creationhour);
        //THREAD'S TITLE
        $result_threadtitle=mysqli_query($connection, "SELECT title FROM threads WHERE id_thread='$i'");
        $row_title=mysqli_fetch_array($result_threadtitle);
        //THREAD'S AUTHOR
        $result_threadauthor=mysqli_query($connection, "SELECT creator FROM threads WHERE id_thread='$i'");
        $row_author=mysqli_fetch_array($result_threadauthor);


        //shows the information throught the browser using <tr> + <td>
        //each tr correspond to a row
        echo '<tr>';
            echo '<td>' . $row_hour[0] . '</td>' . '<br/>'; //hour when the thread was created
            echo '<td>' . $row_title[0] . '</td>' . '<br/>'; //title of the thread
            echo '<td>' . $row_author[0] . '</td>' . '<br/>'; //author of the thread
        echo '</tr>';
    }
echo '</table>';
?>
</body>
</html>

1 个答案:

答案 0 :(得分:5)

只需在此部分代码<br>后删除</td>

    echo '<tr>';
        echo '<td>' . $row_hour[0] . '</td>' ; //hour when the thread was created
        echo '<td>' . $row_title[0] . '</td>' ; //title of the thread
        echo '<td>' . $row_author[0] . '</td>' ; //author of the thread
    echo '</tr>';

由于<br>结构中没有<table>,因此浏览器会在之前显示它们。