将表单数据插入 MySQL？

Posted 2023-02-24

【中文标题】将表单数据插入 MySQL？

【英文标题】：Insert Form Data Into MySQL?

【发布时间】：2013-02-20 05:48:20

【问题描述】：

我正在使用 jQuery 表单来收集用户数据，我正在尝试将表单值插入到表 ptb_registrations 中。

我收到错误“更新数据库错误”

谁能告诉我哪里出错了，这应该很简单。

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：

<?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(); ?>

【问题讨论】：

php.net/manual/en/function.mysql-error.php 可能会让你走上正轨。

为什么不检查错误信息？与或死(mysql_error());

将 mysql_query($query) or die ('Error updating database'); 更改为 mysql_query($query) or die (mysql_error()); 并发布结果。

您的参数中存储了哪些值？您没有显示初始化它们的位置。 $username = $_POST["username"];

@uɐɥʇɐᴎ 您可以将其传递为NULL 或'NULL' 或"NULL"。

【参考方案1】：

如果它是自动递增的，你不必指定 id 值

试试这个

   $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)."'
)";

你应该通过mysql_real_escape_string()转义你的价值观

【参考方案2】：

如果 ID 是主键和自动增量，那么您不需要传入查询并使用此查询：

$query = " INSERT INTO ptb_registrations SET
username = '".mysql_real_escape_string($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)."'";

希望对你有帮助。

【参考方案3】：

只需从 null 中删除单引号并使用不带引号的例如空

【讨论】：

这应该没关系。如果你甚至像这样使用"NULL" 它应该可以工作。

@Mahdi：我认为'null'和null是有区别的

你可以简单地检查一下:)

【参考方案4】：

删除列名并尝试，它可以工作。试试这样的

INSERT INTO table_name values(NULL, column_name);

【参考方案5】：

试试这个查询：

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