PHP的表單驗證錯誤

這是我第一次驗證，我有已經花了無數的時間在這個最困難的時候。我有一個需要驗證的註冊表單，我已經爲此嘗試了2個腳本。效果最好的腳本可以看到下面：但是每一次我嘗試呼應的錯誤消息在我的文本字段，以顯示我收到以下錯誤信息：PHP的表單驗證錯誤

注意：未定義的變量：c_email在/應用上線/MAMP/htdocs/PhpProject2/Reg_1.php

說明：未定義變量：c_emailErr在/Applications/MAMP/htdocs/PhpProject2/Reg_1.php線163

說明：未定義變量：/ Applicat中的c_pass1Err上線離子/ MAMP/htdocs中/ PhpProject2/Reg_1.php 169

C_emailErr和c_pass1Err都定義。

任何幫助，將不勝感激。

HTML

  <section class="container"> 
     <form id="myform " class="Form" method="POST" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" accept-charset="utf-8"> 

      <!--<div id="first">--> 
      <input type="email" id="email" name="email" placeholder="Email Address" value="<?= $c_email ?>" required > 
      <br> 
      <span class="error"><?php echo $c_emailErr; ?></span> 
      <br> 

      <figure> 
       <input class ="login-field" type="password" id="pass1" name="pass1" value="<?= $c_pass1 ?>" placeholder="Password" maxlength="30" required> 
       <br> 
       <span class="error"><?php echo $c_pass1Err; ?></span> 
       <br> 
       <input class ="login-field" type="password" id="pass2" name="pass2" value="" placeholder=" Confirm password" maxlength="30" required><!--<span class="error"><?php //echo $c_pass2Err;    ?></span>--> 
       <div id="messages"></div> 
      </figure> 
      <p class="remember_me"> 
      </p> 
      <input type="submit" name="submit" value="Register" id="submit_button" class="btn btn-default"> 
      <br> 
     </form> 

     <?php 

     ?> 

    </form> 
</section>

PHP

<?php 
       if (isset($_POST['submit'])) { 


        $c_email = $_POST['email']; 
        $c_pass1 = $_POST['pass1']; 
        $c_pass2 = $_POST['pass2']; 
        $c_emailErr = $c_pass1Err = $c_pass2Err = ""; 
        //Checking the email address 
        if (!filter_var($c_email, FILTER_VALIDATE_EMAIL) === false) { 
         echo ("<b id='email'> This is a valid email address </b>"); 
        } else { 
         echo ("<b id='email'> Email is not a valid email address</b>"); 
        } 
        if (strlen($c_pass1) <= '8') { 
         echo "<b>Your Password Must Contain At Least 8 Characters!</br>"; 
         //check passwords 
        } elseif ($c_pass1 == $c_pass2) { 
         $q = "INSERT INTO Cus_Register(Cus_Email,Cus_Password,Cus_confirm_password) VALUES (?,?,?)"; 
         $stmt = mysqli_prepare($dbc, $q); 
         //new 
         // $stmt = mysqli_prepare($dbc, $insert_c); 
         //debugging 
         //$stmt = mysqli_prepare($dbc, $insert_c) or die(mysqli_error($dbc)); 

         mysqli_stmt_bind_param($stmt, 'sss', $c_email, $c_pass1, $c_pass2); 


         if ($q) { 
          echo "<script> alert('registration sucessful')</script>"; 
         } 
        } else { 
         echo "<b>Oops! Your passwords do not </b>"; 
        } 
       } 

       ?>

來源

2016-03-07 jerneva

[PHP：「注意：未定義變量」和「通知：未定義的索引」]的可能的複製（http://stackoverflow.com/questions/4261133/php-notice-undefined-variable-and-notice -undefined-index） – Qirel

PHP和HTML代碼是否包含在同一個文件中？ OMG！ – apokryfos

您正在定義的變量，但要定義if塊內他們..移動它們if塊之外。

<?php 
$c_emailErr = $c_pass1Err = $c_pass2Err = ""; 

if (isset($_POST['submit'])) { 
    $c_email = $_POST['email']; 
    $c_pass1 = $_POST['pass1']; 
    $c_pass2 = $_POST['pass2'];

來源

2016-03-07 16:10:01 mituw16

是它。你是活着的救星！非常感謝你 – jerneva

沒問題！舊的第二雙眼睛的東西:) – mituw16

PHP的表單驗證錯誤

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