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我正在尝试将表单中的值携带到我的“Formhandler”文档中，但我无法让它工作。我尝试在我的 html 标签中添加一个值（Register），但没有奏效。我知道这是我需要更改的表单中的“隐藏”输入字段，我自己无法解决。这可能是一个简单的修复，但我看不到它，需要重新审视这个问题。非常感谢你。

<form id="signinform" action="<?php echo url_for('../Private/createuser.php');?>" method="post">
  <input type="hidden" name="action" id="action" value="Register" />
        <div class="formcontainer">
        <div class="formrow">
            <div class="formlabel">
            Email 
            </div>
            <div class="formfield">
            <input type="text" name="Email" id="Email" class="required" />
            </div>
        </div>
        <div class="formrow">
            <div class="formlabel">
            First Name 
            </div>
            <div class="formfield">
            <input type="text" name="First_name" id="First_name" class="required" />
            </div>
        </div>
        <div class="formrow">
            <div class="formlabel">
            Surname
            </div>
            <div class="formfield">
            <input type="text" name="Surname" id="Surname" class="required" />
            </div>
        </div>
        <div class="formrow">
            <div class="formlabel">
            Password 
            </div>
            <div class="formfield">
            <input type="password" name="Password" id="Password" class="required" />
            </div>
        </div>
        <div class="formrow">
            <div class="longformlabel"><input type="submit" value="Register" class="formbutton" /></div>
        </div>
        </div>
    </form>

然后表单处理程序代码是；

    if($_POST['action']=='Register') {




        //VALIDATION------------------------------------------------------------------------------------------

        $validated = new FormValidator();
        $validflag=true;

        if($validated->validateItem($_POST['Email'], 'email')) {
                $email=$validated->sanatizeItem($_POST['Email'], 'string');
        } else {
            $validflag=false;   
        }



    //END VALIDATION------------------------------------------------------------------------------------------  


        if($validflag=true) {

                $usercheck=mysqli_query($db,"SELECT * FROM `Users` 
                                    WHERE `Email`='{$_POST[$email]}'");

                                if(mysqli_num_rows($usercheck)>0) {
                                        $_SESSION['message']="Email address already in our database - please login or try registering a new account.";
                                        header("location: signup.php" . $processtext);  
                                    }


            $bcrypt = new Bcrypt(15);
            $salt=$bcrypt->getSalt();

            $hash = $bcrypt->hash($_POST['Password'],$salt);

            $sql1 = "INSERT INTO Users ";
            $sql1 .= "(Email, Password) ";
            $sql1 .= "VALUES (";
            $sql1 .= "'" . $email . "',";
            $sql1 .= "'" . $hash . "',";
            $sql1 .= ")";

            $sql = "INSER INTO saltuser ";
            $sql .= "(Email, Saltstring) ";
            $sql .= "VALUES (";
            $sql .= "'" . $email . "',";
            $sql .= "'" . $salt . "'";
            $sql .= ")";

            $result = mysqli_query($saltdb, $sql);
            $result1 = mysqli_query($db, $sql1);

            } else {
                // INSERT failed
                    echo mysqli_error($db);
                    db_disconnect($db);
                    exit;   
                }


    }

来自表单处理程序的日志中的错误表明“操作”未定义。请帮忙。

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