javascript - SQL 不工作 - 不断刷新页面

Question

此 SQL 旨在在人们更改提交“更改密码”页面后运行。他们将填写“newpw”和“confirmpw”并提交页面。SQL 用于检查 newpw == confirmpw，如果匹配，它会更新登录表中的密码，并将他们重定向回他们的玩家资料。如果它们不匹配，它会立即将它们带回更改密码。

我的问题是，即使它们匹配，它仍然让我回到 change-password.php，更烦人的是，第二次，它似乎删除了播放器的“pid”。

我觉得一切正常，所以我想我需要一些新鲜的眼光……知道问题出在哪里吗？

                        // Parse the form data and add inventory item to the system
                    if ($_POST['test'])
                    {
                        if ($_POST["newpw"] == $_POST["confirmpw"]) {
                            $pid = $_SESSION["pid"];
                            $new = mysql_real_escape_string($_POST['confirmpw']);
                            $sql = mysql_query("UPDATE logins SET password='$new' WHERE username='$player'");
                            $confirmation = "Thank You; your password has now been changed.";
                        echo "<SCRIPT LANGUAGE='JavaScript'>
                            window.alert('$confirmation')
                            window.location.href='playerparent-profile.php?pid=$pid';
                            </SCRIPT>";
                            exit();
                        } else {
                                header("location: change-password.php?pid=$pid"); 
                        }
                    }
                        ?>

html

                 <form action="change-password.php?pid=<?=$pid?>" enctype="multipart/form-data" name="myForm" id="myForm" method="post">
                  <div class="clearfix colelem" id="pu20726"><!-- group -->
                   <div class="grpelem" id="u20726"><!-- simple frame --></div>
                   <div class="clearfix grpelem" id="u20724"><!-- group -->
                    <div class="clearfix grpelem" id="u20725-4"><!-- content -->
                     <p>CHANGE PASSWORD</p>
                    </div>
                   </div>
                  </div>
                  <div class="clearfix colelem" id="pu20727-4"><!-- group -->
                   <div class="clearfix grpelem" id="u20727-4"><!-- content -->
                    <p>OLD PASSWORD:</p>
                   </div>
                   <div class="grpelem"><input type="text" required id="u20729" name="oldpw" title="Fill in your old password. This field is required" class="form-element form-element-medium text-element"  /><!-- simple frame --></div>
                  </div>
                  <div class="clearfix colelem" id="pu20728-4"><!-- group -->
                   <div class="clearfix grpelem" id="u20728-4"><!-- content -->
                    <p>NEW PASSWORD:</p>
                   </div>
                   <div class="grpelem" ><input type="password" required id="u20730" name="newpw" title="Fill in your old password. This field is required" class="form-element form-element-medium text-element"  /><!-- simple frame --></div>
                  </div>
                  <div class="clearfix colelem" id="pu20733-4"><!-- group -->
                   <div class="clearfix grpelem" id="u20733-4"><!-- content -->
                    <p>CONFIRM NEW PASSWORD:</p>
                   </div>
                   <div class="grpelem"><input type="password" required id="u20735" name="confirmpw" title="Fill in your old password. This field is required" class="form-element form-element-medium text-element"  /><!-- simple frame --></div>
                  </div>
                  <div class="colelem" id="u20737"><!-- simple frame --></div>
                 </div>
                 <div class="clearfix grpelem" id="u20738"><!-- group -->
                  <div class="clearfix grpelem" id="u20739-4"><!-- content -->
                    <p><a href="#" name="test" onclick="document.getElementById('myForm').submit();">Change Password</a> <?=$pid?><p>
                 </form>

Answer 1

我认为您没有字段“test”来获取值 $_POST['test']