PHP表中的换行符

我的项目有一点显示问题.

事实是我想在表中显示一些信息(sql请求的列类型SHOW Columns btw),但它无法正确显示.

try
{
    echo '<table class="table table-bordered table-striped mb30 mt30">';
    echo'<thead>
            <th class="text-center">Name of column</th>
            <th class="text-center">Type</th>
            <th class="text-center">Update</th>
            <th class="text-center">Delete</th>
         </thead>';
    echo'<tbody>';
    $sql = $bdd->query("SHOW COLUMNS FROM ".$table);
    $column_name = $bdd->query('select column_name from information_schema.columns where table_name = "'.$table.'" and table_schema = "'.$db_name.'" ');
    $i = 0;

    while($donnees = $column_name->fetch())
    {
        $column = $donnees[$i];
        echo '<tr><td class="col-db text-center">'.$donnees[$i].'</td>';
        while ($row = $sql->fetch())
        {
            echo '<td class="col-db text-center">'.$row["Type"].'</td>';
        }
        ?>
        <td><p class="text-center"><a href="form_update_table.PHP?database=<?PHP echo $db_name;?>&table=<?PHP echo $table;?>&column=<?PHP echo $column;?>" class="btn btn-primary btn-xs"><span class="glyphicon glyphicon-pencil"></span></a></p></td>
        <td><p class="text-center"><a href="drop_column.PHP?database=<?PHP echo $db_name;?>&table=<?PHP echo $table;?>&column=<?PHP echo $column;?>" onclick="return confirm_delete()" class="btn btn-danger btn-xs"><span class="glyphicon glyphicon-trash"></span></a></p></td></tr>
        <?PHP
    }
    $i = $i + 1;
}

结果是：

不幸的是,“类型”><之间没有换行符,我该如何解决这个问题？我已经尝试过< br />,它什么都没改变.

解决方法:

删除第二个. secon同时打印所有类型的行.这就是你遇到问题的原因.如果您只是在第一个循环中的每个圆圈中获得一个数据,它将正常工作

while($donnees = $column_name->fetch()) {
    $column = $donnees[$i];
    echo '<tr><td class="col-db text-center">'.$donnees[$i].'</td>';
    $row = $sql->fetch();
    echo '<td class="col-db text-center">'.$row["Type"].'</td>';
     ?>
    <td><p class="text-center"><a href="form_update_table.PHP?database=<?PHP echo $db_name;?>&table=<?PHP echo $table;?>&column=<?PHP echo $column;?>" class="btn btn-primary btn-xs"><span class="glyphicon glyphicon-pencil"></span></a></p></td>
    <td><p class="text-center"><a href="drop_column.PHP?database=<?PHP echo $db_name;?>&table=<?PHP echo $table;?>&column=<?PHP echo $column;?>" onclick="return confirm_delete()" class="btn btn-danger btn-xs"><span class="glyphicon glyphicon-trash"></span></a></p></td></tr>
<?PHP
}

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