Question

此页面基本上显示了一个用户可以选择的DB选项列表，一旦选中，用户可以选择删除所选的选项，如果他们犯了错误。我已经拿出了所有不必要的东西，以便更容易理解。我已经尝试了每个组合来获取会话数组元素以取消设置并且几乎放弃了。我知道发布的值工作正常，因为我在提交表单后让它们回显到屏幕。 array_search函数似乎不喜欢变量名，如果我用物理值替换$ ss_id，我可以让它取消设置。

任何建议都将不胜感激。

<?php require_once('Connections/fs1.php'); 

    if (!isset($_SESSION)) {
      session_start();
    }

    if (!isset($_SESSION['con29']))
    {
    $_SESSION['con29'] = array();
    }

    //db call to get con29 options
    $query1 = mysql_query("SELECT * FROM sub_search_content") or die(mysql_error());

    $_SESSION['main_search_selected'] = 's7';
    $main_search_selected = $_SESSION['main_search_selected'];

    //setup the session variables depending on what was posted------------------

    if (isset($_POST['sub_search_content_id']))//add an option

        {
            $row_id_1 = $_POST['sub_search_content_id']; 
            array_push($_SESSION['con29'],$row_id_1);
        }

    if (isset($_POST['sub_search_content_id_remove']))
    {
        $ss_id = $_POST['sub_search_content_id_remove'];
        $key=array_search($ss_id,$_SESSION['con29']);
        if($key!==false) unset($_SESSION['con29'][$key]);
        //echo $ss_id;
        //echo $key;
    } 

    //print_r ($_SESSION['con29']);

    ?>
    <table width="100%" border="0" cellpadding="0" cellspacing="0">
    <?php


        while ($row = mysql_fetch_assoc($query1)) 
            {


                    $sub_search_id = $_SESSION['con29'];

                    if($row[$main_search_selected] == 1)
                     {
                     $bgcolour = '#ffffff';
                     $select_row ='';
                     $select_row_2='';
                     }

                    elseif($row[$main_search_selected] == 2)
                     {

                         $id = $row['sub_search_content_id'];
                         $key = array_search($id, $sub_search_id);

                         if($key != '')
                                {
                                    $bgcolour = '#AFC137';
                                    $select_row = '<input name="submit" class="push_buttons" type="submit" value="Remove" />';
                                    $select_row_2 = '<input name="sub_search_content_id_remove" type="hidden" id="sub_search_content_id_remove" value="' . $row['sub_search_content_id'] .' " />';  
                                }
                         else
                                {
                                    $bgcolour = '#ffffff';
                                                                    $select_row = '<input name="submit" class="push_buttons" type="submit" value="select" />';
                                    $select_row_2 = '<input name="sub_search_content_id" type="hidden" id="sub_search_content_id" value="' . $row['sub_search_content_id'].'" />';  
                                }
                     }

                     elseif($row[$main_search_selected] == 3)
                     {

                                    $bgcolour = '#FF9900';
                                    $select_row = "Included";
                     }

    //----------------------------------------------------------------------------------------------------------------------------------------------------------------------------


                            if($row[$main_search_selected] != 1)
                            { ?>

                                              <tr bgcolor="<?php echo $bgcolour;?>" >
                                                <form action="test1.php" method="POST" name="form1" id="form1"   >
                                                  <?php echo $select_row_2; ?>
                                                  <td width="60" height="25" align="center" valign="middle" class="top-edge-border-menu"><?php echo $row['sub_search_content_id']; ?></td>
                                                  <td align="center" valign="middle" class="top-and-right-edge-border-left"><?php echo $row['sub_title']; ?></td>
                                                  <td height="25" align="center" valign="middle" class="top-and-right-edge-border">price</td>
                                                  <td height="25" align="center" valign="middle" class="top-edge-border"><?php echo $select_row; ?></td>
                                                </form>
                                              </tr>
                                              <?php }
                     } ?>

                                            </table></td>
                                          </tr>
                                      </tbody>
                                    </table>
    <?php mysql_free_result($query1); ?>

Answer 1

value="' . $row['sub_search_content_id'] .' "

注意那里的尾随空间？当您将ID重新发布到脚本中以将其从会话中删除时，您需要在ID中附加一个空格 - 这会阻止array_search在您的会话中找到它。

只需将该行更改为：

$select_row_2 = '<input name="sub_search_content_id_remove" type="hidden" id="sub_search_content_id_remove" value="' . $row['sub_search_content_id'] . '" />';

注意 - 如果您需要详细检查变量，var_dump()远远优于echo() - 它会向您显示空格和变量类型等内容。

使用已发布变量删除时无法取消设置$ SESSION变量

1 个答案: