將表單數據插入MySQL？

Question

我正在使用jQuery表單來收集用戶數據，並且我試圖將表單值插入表ptb_registrations。

我收到錯誤「錯誤更新數據庫」

有人能告訴我在哪裏，我錯了，請，這應該是相當簡單的。

HTML：

<form action="process_registration.php" method="post" id="reg_form"> 

    <!-- #first_step --> 
    <div id="first_step"> 
     <h1>SIGN UP FOR A FREE <span>ACTION-TIME.COM</span> ACCOUNT</h1> 
     <div class="form"> 
      <input type="text" name="username" id="username" value="username" /> 
      <label for="username">At least 4 characters. Uppercase letters, lowercase letters and numbers only.</label> 

      <input type="password" name="password" id="password" value="password" /> 
      <label for="password">At least 4 characters. Use a mix of upper and lowercase for a strong password.</label> 

      <input type="password" name="cpassword" id="cpassword" value="password" /> 
      <label for="cpassword">If your passwords aren’t equal, you won’t be able to continue with signup.</label> 
     </div>  <!-- clearfix --><div class="clear"></div><!-- /clearfix --> 
     <input class="submit" type="submit" name="submit_first" id="submit_first" value="" /> 
    </div>  <!-- clearfix --><div class="clear"></div><!-- /clearfix --> 

    <!-- #second_step --> 
    <div id="second_step"> 
     <h1>SIGN UP FOR A FREE <span>WEBEXP18</span> ACCOUNT</h1> 

     <div class="form"> 
      <input type="text" name="firstname" id="firstname" value="first name" /> 
      <label for="firstname">Your First Name. </label> 
      <input type="text" name="lastname" id="lastname" value="last name" /> 
      <label for="lastname">Your Last Name. </label> 
      <input type="text" name="email" id="email" value="email address" /> 
      <label for="email">Your email address. We send important administration notices to this address. </label>      
     </div>  <!-- clearfix --><div class="clear"></div><!-- /clearfix --> 
     <input class="submit" type="submit" name="submit_second" id="submit_second" value="" /> 
    </div>  <!-- clearfix --><div class="clear"></div><!-- /clearfix --> 

    <!-- #third_step --> 
    <div id="third_step"> 
     <h1>SIGN UP FOR A FREE <span>WEBEXP18</span> ACCOUNT</h1> 

     <div class="form"> 
      <select id="age" name="age"> 
       <option> 0 - 17</option> 
       <option>18 - 25</option> 
       <option>26 - 40</option> 
       <option>40+</option> 
      </select> 
      <label for="age">Your age range. </label> <!-- clearfix --><div class="clear"></div><!-- /clearfix --> 

      <select id="gender" name="gender"> 
       <option>Male</option> 
       <option>Female</option> 
      </select> 
      <label for="gender">Your Gender. </label> <!-- clearfix --><div class="clear"></div><!-- /clearfix --> 

      <select id="country" name="country"> 
       <option>United States</option> 
       <option>United Kingdom</option> 
       <option>Canada</option> 
       <option>Serbia</option> 
       <option>Italy</option> 
      </select> 
      <label for="country">Your country. </label> <!-- clearfix --><div class="clear"></div><!-- /clearfix --> 

     </div>  <!-- clearfix --><div class="clear"></div><!-- /clearfix --> 
     <input class="submit" type="submit" name="submit_third" id="submit_third" value="" /> 

    </div>  <!-- clearfix --><div class="clear"></div><!-- /clearfix --> 

    <!-- #fourth_step --> 
    <div id="fourth_step"> 
     <h1>SIGN UP FOR A FREE <span>WEBEXP18</span> ACCOUNT</h1> 

     <div class="form"> 
      <h2>Summary</h2> 

      <table> 
       <tr><td>Username</td><td></td></tr> 
       <tr><td>Password</td><td></td></tr> 
       <tr><td>Email</td><td></td></tr> 
       <tr><td>Name</td><td></td></tr> 
       <tr><td>Age</td><td></td></tr> 
       <tr><td>Gender</td><td></td></tr> 
       <tr><td>Country</td><td></td></tr> 
      </table> 
     </div>  <!-- clearfix --><div class="clear"></div><!-- /clearfix --> 
     <input class="send submit" type="submit" name="submit_fourth" id="submit_fourth" value="" />    
    </div> 

</form> 

PHP/MySQL的：

<?php ob_start(); 

include '../includes/_config/connection.php'; 

$query="INSERT INTO ptb_registrations (ID, 
    username, 
    password, 
    firstname, 
    lastname, 
    email, 
    age, 
    gender, 
    country 
) 
VALUES('NULL', 
    '".$username."', 
    '".$password."', 
    '".$firstname."', 
    '".$lastname."', 
    '".$email."', 
    '".$age."', 
    '".$gender."', 
    '".$country."' 
)"; 
mysql_query($query) or die ('Error updating database'); 
?> 

<?php include ('includes/send_email/reg_email.php'); ?> 

<? ob_flush(); ?> 

Answer 1

你不要有specifie id的值，如果其自動遞增

試試這個

$query="INSERT INTO ptb_registrations (
username, 
password, 
firstname, 
lastname, 
email, 
age, 
gender, 
country 

) 
VALUES(
'".mysql_real_escape_string($username)."', 
'".mysql_real_escape_string($password)."', 
'".mysql_real_escape_string($firstname)."', 
'".mysql_real_escape_string($lastname)."', 
'".mysql_real_escape_string($email)."', 
'".mysql_real_escape_string($age)."', 
'".mysql_real_escape_string($gender)."', 
'".mysql_real_escape_string($country)."' 
)"; 

你應該逃避你的val通過mysql_real_escape_string()

Answer 2

如果ID的UE是主鍵和自動遞增，那麼你就不需要通過查詢和使用此查詢：

$query = " INSERT INTO ptb_registrations SET 
username = '".mysql_real_escape_string($username)."', 
password = '".mysql_real_escape_string($password)."', 
firstname = '".mysql_real_escape_string($firstname)."', 
lastname = '".mysql_real_escape_string($lastname)."', 
email = '".mysql_real_escape_string($email)."', 
age = '".mysql_real_escape_string($email)."', 
gender = '".mysql_real_escape_string($gender)."', 
country = '".mysql_real_escape_string($country)."'"; 

希望它會幫助你的。

Answer 3

只需刪除null中的單引號並使用不帶引號的引號null

Answer 4

刪除列名並嘗試使用。嘗試這樣的

INSERT INTO table_name values(NULL, column_name);