在提交另一個表單時使用PHP訪問值

Question

我在這裏有兩個部分，一個是類別部分，另一個是登錄部分。我想的是，選擇的類別可以在login.php中通過simpe $cat = $_POST['logincategory']; echo $cat;進行訪問，但所選擇的無線電值是可訪問的，並在提交表單的錯誤顯示出來說： Notice: Undefined index: logincategory

<section id="categorysection" action="login.php" form="loginform"> 


     <ul style="font-size:20px; font-color:#000;"> 
      <li> <input type="radio" name="logincategory" value="administrator"> Administrator </li> 
      <li> <input type="radio" name="logincategory" value="director"> Director (IQAC) </li> 
      <li> <input type="radio" name="logincategory" value="vicechancellor"> Vice Chancellor </li> 
      <li> <input type="radio" name="logincategory" value="registrar"> Registrar </li> 
      <li> <input type="radio" name="logincategory" value="facutly"> Faculty/Dept. Representative </li> 
     </ul> 
    <button id="logincategorybutton" type="submit" class="login-button" value="&rarr; Login" hidden>Login</button> 

</section> 
<section id="loginsection" > 
    <form method="post" action="login.php" class="login" id="loginform"> 
    <p> 
     <label for="username" style="color:#000; font-weight:700">Username:</label> 
     <input type="text" name="username" id="username" style="width:300px" required placeholder="enter username" maxlength="20"> 
    </p> 

    <p> 
     <label for="password" style="color:#000; font-weight:700">Password:</label> 
     <input type="password" name="password" id="password" style="width:300px" required placeholder="enter password" maxlength="20"> 
    </p> 

    <p class="login-submit"> 
     <input type="hidden" name="form_token" value="<?php echo $form_token; ?>" /> 
     <button type="submit" class="login-button" onclick="document.getElementById('logincategorybutton').click();" value="&rarr; Login">Login</button> 
    </p> 

    <!-- <p class="forgot-password"><a href="index.html">Forgot your password?</a></p>--> 
    </form> 

    <sup style="color:#000; padding-left:150px;"> ** both username and password must be alpha-numeric between 4-20 characters</sup> 
</section> 



</body> 

編輯：帶來了單選按鈕形式的標籤，仍然面臨着同樣的問題

<section id="categorysection" > 


     <form form="loginform"> 
     <ul style="font-size:20px; font-color:#000;"> 
      <li> <input type="radio" name="logincategory" value="administrator"> Administrator </li> 
      <li> <input type="radio" name="logincategory" value="director"> Director (IQAC) </li> 
      <li> <input type="radio" name="logincategory" value="vicechancellor"> Vice Chancellor </li> 
      <li> <input type="radio" name="logincategory" value="registrar"> Registrar </li> 
      <li> <input type="radio" name="logincategory" value="facutly"> Faculty/Dept. Representative </li> 
     </ul> 
     </form> 
    <button id="logincategorybutton" type="submit" class="login-button" value="&rarr; Login" hidden>Login</button> 

</section> 

Answer 1

您需要將內形式的單選按鈕標籤。另外，您不能使用section標籤提交表單。

Answer 2

下面是修改後的代碼。

所有輸入元素都需要封裝在表單中。注意我也刪除了第二個提交按鈕，因爲您只需要每個表單一個。

<form method="post" action="login.php" class="login" id="loginform"> 
    <section> 
    <ul style="font-size:20px; font-color:#000;"> 
     <li> <input type="radio" name="logincategory" value="administrator"> Administrator </li> 
     <li> <input type="radio" name="logincategory" value="director"> Director (IQAC) </li> 
     <li> <input type="radio" name="logincategory" value="vicechancellor"> Vice Chancellor </li> 
     <li> <input type="radio" name="logincategory" value="registrar"> Registrar </li> 
     <li> <input type="radio" name="logincategory" value="facutly"> Faculty/Dept. Representative </li> 
    </ul> 
    </section> 
    <section id="loginsection" > 
     <p> 
     <label for="username" style="color:#000; font-weight:700">Username:</label> 
     <input type="text" name="username" id="username" style="width:300px" required placeholder="enter username" maxlength="20"> 
     </p> 
     <p> 
     <label for="password" style="color:#000; font-weight:700">Password:</label> 
     <input type="password" name="password" id="password" style="width:300px" required placeholder="enter password" maxlength="20"> 
     </p> 
     <p class="login-submit"> 
     <input type="hidden" name="form_token" value="<?php echo $form_token; ?>" /> 
     <button type="submit" class="login-button" onclick="document.getElementById('logincategorybutton').click();" value="&rarr; Login">Login</button> 
     </p> 
    <!-- <p class="forgot-password"><a href="index.html">Forgot your password?</a></p>--> 
    <sup style="color:#000; padding-left:150px;"> ** both username and password must be alpha-numeric between 4-20 characters</sup> 
    </section> 
</form> 

Answer 3

<section id="loginsection" > 
    <form method="post" action="login.php" class="login" id="loginform"> 
    <p> 
     <label for="username" style="color:#000; font-weight:700">Username:</label> 
     <input type="text" name="username" id="username" style="width:300px" required placeholder="enter username" maxlength="20"> 
    </p> 

    <p> 
     <label for="password" style="color:#000; font-weight:700">Password:</label> 
     <input type="password" name="password" id="password" style="width:300px" required placeholder="enter password" maxlength="20"> 
    </p> 

    <p class="login-submit"> 
     <input type="hidden" name="form_token" value="<?php echo $form_token; ?>" /> 
     <button type="submit" class="login-button" value="&rarr; Login">Login</button> 
    </p> 

    <!-- <p class="forgot-password"><a href="index.html">Forgot your password?</a></p>--> 
    </form> 

     </section> 






<section id="categorysection" >  

     <form form="loginform"> 
      <ul style="font-size:20px; font-color:#000;"> 
       <li> <input type="radio" form="loginform" name="logincategory" value="administrator"> Administrator </li> 
       <li> <input type="radio" form="loginform" name="logincategory" value="director"> Director (IQAC) </li> 
       <li> <input type="radio" form="loginform" name="logincategory" value="vicechancellor"> Vice Chancellor </li> 
       <li> <input type="radio" form="loginform" name="logincategory" value="registrar"> Registrar </li> 
       <li> <input type="radio" form="loginform" name="logincategory" value="facutly"> Faculty/Dept. Representative </li> 
      </ul> 
     </form>  
</section>