Question

我正在学校比较网站。为此，我需要一个处理该功能的插件。我将会话数据保存为学校ID，以便在选择学校后可以在比较表中传递。

我遇到问题的任务：

“添加按钮” - 将会/学校ID添加到会话数组 - $ _SESSION ['schools']
顶部的仪表板 - echo $ _SESSION ['schools']值（仅供用户体验列出目前列表中的学校）
按下“添加按钮”时，自动更新仪表板列表。最好不要整页。

到目前为止我的尝试：

首先，我评论了PHP表单操作：

    <?php   session_start();    
    $schools = array('post_id');

    //If form not submitted, display form. 
    if (!isset($_POST['submit_school'])){

    //If form submitted, process input.
    } else {
        //Retrieve established school array.
        $schools=($_POST['school']);
        //Convert user input string into an array.
        $added=explode(',',$_POST['added']);

        //Add to the established array.
        array_splice($schools, count($schools), 0, $added);
        //This could also be written $schools=array_merge($schools, $added);

    }

    $_SESSION['schools'] = $schools;
?>

接下来是表单本身：

    <form method="post" action="http://henrijeret.ee/7788/temp_add_button.php" id="add_school">
    <input type="hidden" name="added" value="Value" size="80" />
    <?php
        //Send current school array as hidden form data.
        foreach ($schools as $s){
            echo "<input type=\"hidden\" name=\"school[]\" value=\"$s\" />\n";
        }
    ?>
    <input type="submit" name="submit_school" value="Lisa võrdlusesse" />
</form>

对于我使用的仪表板：

    <?php


    foreach($_SESSION['schools'] as $key => $value){
        // and print out the values
        echo 'The value of $_SESSION['."'".$key."'".'] is '."'".$value."'".' <br />';
    }
?>

这只是一个原型，让我的头脑包裹在我面前的任务......

问题有些事情感觉不对..：P

当我提交表单时，则不会进行第一次更改。当我第二次按下它时，它会更新列表，而不是最后一个字符串。刷新然后整页，然后弹出最后一页

我非常赞赏这个长话题的建议.Maby我不知道在哪里看，但我有点陷入寻找解决方案..

链接到我正在运行的代码http://henrijeret.ee/7788/

Answer 1

您是在第一次运行时提交表单..如果您将检查您的网址更改以及下次运行..自从您获得此

  //If form not submitted, display form. 
    if (!isset($_POST['submit_school'])){

    //If form submitted, process input.
    } else {
        //Retrieve established school array.
        $schools=($_POST['school']);
        //Convert user input string into an array.
        $added=explode(',',$_POST['added']);

        //Add to the established array.
        array_splice($schools, count($schools), 0, $added);
        //This could also be written $schools=array_merge($schools, $added);

    }

它将转到else语句，因为已经设置了POST。

试试这个：

 //If form not submitted, display form. 
    if (!isset($_POST['submit_school'])){

    //If form submitted, process input.
    } else {
        //Retrieve established school array.
        $schools=($_POST['school']);
        //Convert user input string into an array.
        $added=explode(',',$_POST['added']);

        //Add to the established array.
        array_splice($schools, count($schools), 0, $added);
        //This could also be written $schools=array_merge($schools, $added);

       $_SESSION['schools'] = $schools;

    }

如何在提交时自动刷新会话数组项列表？

1 个答案: