javascript - 由于脚本的原因，我的查询无法工作(它以错误的方式工作)!？但为什么？ session 和 PHP

Question

所以我必须为学校制作一个网络应用程序。您可以使用它来声明项目成本、名称、其他属性、登录等，并且我编写了一种在下拉菜单中按用户对项目进行排序的方法。

因此，在我的脚本中，它会查找下拉菜单的值并将其放入查询中，这就是为什么我应该只看到该特定用户的“项目”以及他/她的唯一代码(将其从下拉值中取出!)。

我在 Google Chrome 控制台中使用 jQuery 查找了下拉菜单的值( jQuery 行:$(".li.li-primary-1 option:selected").val() ; ) 它给了我正确的值(value)。

但是每当我执行查询时，我总是得到错误的代码“1007”。

我尝试了很多不同的方法，但没有成功。有人可以指出这篇文章完全错误的地方吗？需要一些解释。提前致谢! :)

    <img src="assets/logo.png" width="150" style="margin-right: auto; position:static; display:block; margin-top: 0.5%;margin-left: 0.5%;">
    <span class="echo-user"> <?php echo $_SESSION['name'];?>,  <?php  echo $_SESSION['consultantcode']; ?>
        <br><div class="btn-group btn-group-lg">
            <a href="uitloggen.php"><button type="submit" name="dangerbutton" class="btn btn-danger" id="btn-btn-danger-1">Uitloggen</button></a>
        </div>  
    </span>
</div>
<div class="decla">

<h2>Declarations per project</h2>

             <form id="content-project" name="search" method="post">
                <div class="field">
                    <label>Choose project:</label> 
                    <select name="peruser" class="li li-primary-1">
                        <?php 
                        $query = "SELECT * FROM consultant";
                        $q = $db->prepare($query);
                        $q->execute();
                        $qry = $q->fetchAll(PDO::FETCH_ASSOC);

                         foreach ($qry as $qe) {
                        echo "<option value='" .$qe['consultantcode']. "'>".$qe['naam']."</option>";

                        }
                        ?>
                        </select>

                    <br /><input class="btn btn-default" style="width: 20%; margin-left: 20.5%;" type="submit" name="submit" value="Zoeken" />
                    <a href="adminpage.php"><button class="btn btn-primary">Terug</btn></a>
                </div>
             </form>
        </p>

                        <?php
                        if (isset($_POST['submit'])) {
                            ?> 
                            <p>
        <center>
                <table class='declaraties' style='border-collapse: collapse'>
                    <thead>
                        <tr>
                            <th><b>Declaratie code </b></th>
                            <th><b>Project code </b></th>
                            <th><b>Project naam </b></th>
                            <th><b>Omschrijving</b></th>
                            <th><b>Kosten code </b></th>
                            <th><b>Datum</b></th>
                            <th><b>Consultant code </b></th>
                        </tr>
                    </thead>
                    <tbody>
                        <?php

                        $cc = $_SESSION['consultantcode'];
                            $query = 'SELECT consultant.consultantcode, consultant.naam,
                            declaratie.declaratiecode, declaratie.kostencode, declaratie.datum,
                            project.projectnaam, project.projectcode, kosten.omschrijving,
                            kosten.kostencode, consultant.naam, consultant.consultantcode
                            FROM declaratie
                            INNER JOIN project
                            ON project.projectcode = declaratie.projectcode
                            INNER JOIN kosten
                            ON kosten.kostencode = declaratie.kostencode
                            INNER JOIN consultant
                            ON consultant.consultantcode = declaratie.consultantcode
                            WHERE declaratie.consultantcode ="'.$qe['consultantcode'] .'"';
                            $data = $db->prepare($query);
                            $data->execute(array());
                            $rows = $data->fetchAll(PDO::FETCH_ASSOC);

                            foreach($rows as $row)
                            {
                                echo "<tr><td>"  
                                . $row['declaratiecode'] . "</td><td>"
                                . $row['projectcode'] . "</td><td>" 
                                . $row['projectnaam'] . "</td><td>" 
                                . $row['omschrijving'] . "</td><td>"
                                . $row['kostencode'] . "</td><td>"
                                . $row['datum'] . "</td><td>" 
                                . $row['consultantcode'] . "</td><td>" 
                                .  "</td></tr>";


                            }
                                // echo "<td style='margin-top:2%;'>" . $qewat. "<br>" . $qewa . "</td>";
                        }
                        ?>
                    </tbody>
                </table>
            </center>
            </p>
</div>

<div class="modal fade declaraties-modal-email" tabindex="-1" role="dialog" aria-labelledby="myLargeModalLabel" aria-hidden="true">
  <div class="modal-dialog modal-lg">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
        <h4 class="modal-title">Mijn declaraties</h4>
      </div>
      <div class="modal-body">
        <p>
        <center>
                <table class='declaraties' style='border-collapse: collapse'>
                    <thead>
                        <tr>
                            <th><b>Declaratie code &nbsp;</b></th>
                            <th><b>Project naam &nbsp;</b></th>
                            <th><b>Project code &nbsp;</b></th>
                            <th><b>Kosten code &nbsp;</b></th>
                            <th><b>Datum</b></th>
                        </tr>
                    </thead>
                    <tbody>
                        <?php include_once 'mijndeclaratie.php';?>
                    </tbody>
                </table>
            </center>
            </p>
      </div>
      <!-- <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
        <button type="button" class="btn btn-primary">Save changes</button>
      </div> -->
    </div><!-- /.modal-content -->

<script type="text/javascript"> 
    $('.btn.btn-danger.1').on("click", function() {
        alert('U bent uitgelogd!');
    });    
</script>

Answer 1

您正在选择选项下拉循环中的最后一个结果。

WHERE declaratie.consultantcode ="'.$qe['consultantcode'] .'"';

应该是这样

WHERE declaratie.consultantcode ="'.$_POST['peruser'] .'"';

它也应该被清理，但是对于这个问题，这就是你得到错误结果的原因。