在表格内的表格中发布php数据

Question

在下面的代码中，问题是隐藏输入字段（名为“res_id”）的值将固定到表的第一行。知道我在这里运行一个 foreach 循环来生成 res_id 字段的值，我希望每次 foreach 循环重新开始时都有唯一的值。请注意，表格数据字段或<td> 呈现正确的值。换句话说，如果我尝试在操作 php 页面中回显 res_id 的 POST 值，它将保持相同的值！希望我很清楚。非常感谢您的帮助。

    <div>
<form id="form_st_feedback" class="form-horizontal" action="st_fdbk.php" method="post" onsubmit="return confirm('Are you sure?');">
        <table class="table table-bordered">
            <thead>
                <th style="width:10%; padding:0px; margin:0px;">Res. ID</th>
                <th style="width:10%; padding:0px; margin:0px;">Class Date</th>
                <th style="width:10%; padding:0px; margin:0px;">Tutor</th>
                <th style="width:15%; padding:0px; margin:0px;">How was your class?</th>
                <th style="width:55%; padding:0px; margin:0px;">Your comment</th>
            </thead>            
            <tbody>
            <?php 
    $tt=null;  
    $rr = null;
    $mypdo2 = Database::connect();
    $mypdo2->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    $mysql3 = "SELECT * FROM tbl_reservation WHERE res_st_id = $user_id AND res_del=FALSE AND teacher_cant_mkit=FALSE ORDER BY res_date";
    $myq3 = $mypdo->prepare($mysql3);
    $myq3->execute(array());
    $mydata3 = $myq3->fetch(PDO::FETCH_ASSOC);



        foreach ($mypdo2->query($mysql3) as $row) {
            $res_id=$row['res_id'];
            $mysql4 = "SELECT * FROM tbl_st_page_feedbk WHERE fb_res_id = ? LIMIT 1"; // linking to feedback table
            $myq4 = $mypdo2->prepare($mysql4);
            $myq4->execute(array($res_id));
            $mydata4 = $myq4->fetch(PDO::FETCH_ASSOC);

                $tt=$row['res_date'].$row['res_time'];
                $str_tt0= date('m/d/Y H:i', strtotime($tt));
                $str_tt=strtotime($str_tt0); 
                if    (  ($str_tt - $timenow<=-600) ) { //10 mins after class started
                 echo '<tr>';
                    echo '<td>'. $res_id .'</td>';
                    echo "<input type='hidden' name='res_id' value='$res_id'>";
                    echo '<td>'. $row['res_date'].'<br />'.$row['res_time'] .'</td>';
                    if ($row['res_tut_id']==10) {echo '<td>' . 'Kim' . '</td>';}
                    if ($row['res_tut_id']==16) {echo '<td>' . 'Morly' . '</td>';}
                    if ($row['res_tut_id']==22) {echo '<td>' . 'Arlene' . '</td>';}
                            if ($row['st_rep_feedbk']=='NO') {
                            echo '<td>' .'<select name="selected_quality"style="color:blue;">
                                                <option value="Excellent">Excellent (5/5)</option>
                                                <option value="Good">Good (4/5)</option>
                                                <option value="Fair">Fair (3/5)</option>
                                                <option value="Poor">Poor (2/5)</option>
                                                <option value="Very Poor">Very Poor (1/5)</option>
                                        </select>'
                                 .'</td>';
                            echo    '<td>'
                                        .'<textarea id="comment_txt" name="comment_txt" style="color:#00f; display:inline; flloat:left;" rows="2" maxlength="80" value=""></textarea>'
                                        .'<br />'
                                        .'<button id="submit" type="submit" class="btn btn-success" style="display:block; margin:2px auto; padding:2px 5px;">Submit</button>'
                                    .'</td>';
                             }
                             else { echo '<td>'.$mydata4['fb_quality'].'</td>';
                                    echo '<td>'.$mydata4['fb_comment'].'</td>';
                                  }
                echo '</tr>';
            } // end of if
            } //end of foreach
            Database::disconnect();
            ?>
            </tbody>
        </table>
    </form>
    </div>

Answer 1

在你的 foreach 循环中包含一个行计数器，或者为来自另一个来源的每一行使用一个唯一的 ID

$i_rowcount++;

将输入字段命名为这样，因此您的帖子值中的行 ID 为数组索引键。

<input type="hidden" name="resid[$i_rowcount]" value="your value">

当您点击类似这样的帖子时，结果将是您拥有一个数组

resid
 1 => value of first row
 2 => value of second row
 ...

如果您想修复选择字段的值，请以相同的方式进行操作

$a_options = array(1 => 'Very Good',
                   2 => 'Good',
                   3 => 'Average');

echo '<select name="selected_quality[$i_rowcount]"style="color:blue;">';
foreach($a_options as $i_key => $s_value){
 echo '<option'.($_POST['selected_quality'][$i_rowcount] == $i_key ? ' selected="selected"' : '').' value="'.$i_key.'">'.$s_value.'</option>';
}
echo '</select>';