用于复选框的PHP逻辑，其中我有2个表单和2个MySQL表

我是保罗。我有两张表格：

• 电子邮件的简单“新闻注册”输入和按钮

• 带有姓名、电子邮件、信息的“联系人”表格。我还有一个复选框，允许注册此表单中的新闻

您可以在这里的“测试”页面上看到它们：

我不知道如何设置复选框的逻辑，以便两种形式都能正常工作。如果订阅者使用注册表单，然后希望向我们发送消息，则联系人表单根本不允许他们继续：

'此电子邮件地址已注册'

。理想情况下，我认为我们应该接受该消息，而不考虑以前的注册或复选框状态。反馈总是有一些积极的话要说：

'您的邮件已收到'

或

'您的消息已收到。您的电子邮件已在此处注册'

，如果不是两条正面信息：

'您的邮件已收到，您已注册'

我对响应式表格不熟悉。我最初基于本教程进行开发：

它使用JS、jQuery、PHP、MySQL、JSON。但现在我有了第二张表格，里面有更多的东西。我能够让两个表单成功地检查两个表中的两个字段，但现在它的反馈逻辑是错误的。（编辑：我指的是“联系人”表单的PHP）

“注册”表单的HTML：

    <form id="newsletter-signup" action="?action=signup" method="post">
        <label for="signup-email">Sign up for news & events:</label>
        <input type="email" name="signup-email" id="signup-email" placeholder="Your email here..."></input>
        <input type="submit" name="signup-button" id="signup-button" value="Sign Me Up!"></input>
        <p id="signup-response"></p>
    </form>

$(document).ready(function(){
    $('#newsletter-signup').submit(function(){

    //check the form is not currently submitting
    if($(this).data('formsstatus') !== 'submitting'){

        //setup variables
        var form = $(this),
        formData = form.serialize(),
        formUrl = form.attr('action'),
        formMethod = form.attr('method'), 
        responseMsg = $('#signup-response');

        //add status data to form
        form.data('formsstatus','submitting');

        //show response message - waiting
        responseMsg.hide()
                   .addClass('response-waiting')
                   .text('Please Wait...')
                   .fadeIn(200);

        //send data to server to be validated
        $.ajax({
            url: formUrl,
            type: formMethod,
            data: formData,
            success:function(data){
                //setup variables
                var responseData = jQuery.parseJSON(data), 
                    klass = '';

                //response conditional
                switch(responseData.status){
                    case 'error':
                        klass = 'response-error';
                    break;
                    case 'success':
                        klass = 'response-success';
                    break;  
                }

                //show reponse message
                responseMsg.fadeOut(200,function(){
                    $(this).removeClass('response-waiting')
                           .addClass(klass)
                           .text(responseData.message)
                           .fadeIn(200,function(){
                               //set timeout to hide response message
                               setTimeout(function(){
                                   responseMsg.fadeOut(200,function(){
                                       $(this).removeClass(klass);
                                       form.data('formsstatus','idle');
                                   });
                               },3000)
                            });
                });
            }
        });
    }
    //prevent form from submitting
    return false;
    });
})

最后是“联系人”表单的JS（与“注册”表单几乎相同）：

代码就是这样。我想学习如何设置逻辑以提供适当的反馈，如代码上方的理想示例所示。我很乐意提供我可能需要研究的任何关键词/链接/示例。谢谢你，保罗。

这对我很有用：

步骤1：在phpmyadmin中创建第三个MySQL表，名为'contact_only'，用于只想发送消息的人（无需注册）

步骤2：在“联系人”表单php中，根据用户是否勾选复选框，使用“if&else if”给出适当的反馈

if ( isset($_POST['contact-checkbox']) ) {

    $existingContact = mysql_query("SELECT * FROM `signups`, `contact` WHERE signup_email_address='$email' OR contact_email_address='$email'");  
    if(mysql_num_rows($existingContact) < 1){

        $checkbox = $_POST['contact-checkbox'];
        $message = $_POST['contact-textarea'];
        $name = $_POST['contact-name'];
        $date = date('Y-m-d');
        $time = date('H:i:s');

        $insertContact = mysql_query("INSERT INTO contact (contact_email_address, contact_date, contact_time, contact_name, contact_message, contact_checkbox) VALUES ('$email','$date','$time','$name','$message','$checkbox')");

        if($insertContact){
            $status = 'success';
            $message = 'your message has been received and you have been signed up';        
        }
    }
    else {

        $checkbox = $_POST['contact-checkbox'];
        $message = $_POST['contact-textarea'];
        $name = $_POST['contact-name'];
        $date = date('Y-m-d');
        $time = date('H:i:s');

        $insertContact = mysql_query("INSERT INTO contact (contact_email_address, contact_date, contact_time, contact_name, contact_message, contact_checkbox) VALUES ('$email','$date','$time','$name','$message','$checkbox')");

        $status = 'success';
        $message = 'Message received. Note - this email address has already been subscribed!';
    }
}
else if (isset($_POST['contact-checkbox']) == false){
    $checkbox = 0;
    $message = $_POST['contact-textarea'];
    $name = $_POST['contact-name'];
    $date = date('Y-m-d');
    $time = date('H:i:s');

    $insertContactOnly = mysql_query("INSERT INTO contact_only (contact_only_email_address, contact_only_date, contact_only_time, contact_only_name, contact_only_message, contact_only_checkbox) VALUES ('$email','$date','$time','$name','$message','$checkbox')");

    if ($insertContactOnly) {
        $status = 'success';
        $message = 'your message has been received';
    }           
}

else {
    $status = 'error';
    $message = "Oops, there's been a technical error!"; 
}

if（设置（$\u POST['contact-checkbox']））{
$existingContact=mysql\u query（“从`signups`、`contact`WHERE signup\u email\u address='$email'或contact\u email\u address='$email'中选择*）；
if（mysql\u num\u行（$existingContact）<1）{
$checkbox=$_POST['contact-checkbox']；
$message=$_POST['contact-textarea']；
$name=$_POST['contact-name']；
$date=日期（'Y-m-d'）；
$time=日期（'H:i:s'）；
$insertContact=mysql\u查询（“插入到联系人（联系人电子邮件地址、联系人日期、联系人时间、联系人姓名、联系人消息、联系人复选框）值（“$email”、“$date”、“$time”、“$name”、“$message”、“$checkbox”）；
如果（$insertContact）{
$status='success'；
$message='您的邮件已收到且已注册'；
}
}
否则{
$checkbox=$_POST['contact-checkbox']；
$message=$_POST['contact-textarea']；
$name=$_POST['contact-name']；
$date=日期（'Y-m-d'）；
$time=日期（'H:i:s'）；
$insertContact=mysql\u查询（“插入到联系人（联系人电子邮件地址、联系人日期、联系人时间、联系人姓名、联系人消息、联系人复选框）值（“$email”、“$date”、“$time”、“$name”、“$message”、“$checkbox”）；
$status='success'；
$message='已收到邮件。注意-此电子邮件地址已订阅！'；
}
}
else if（isset（$\u POST['contact-checkbox']）==false）{
$checkbox=0；
$message=$_POST['contact-textarea']；
$name=$_POST['contact-name']；
$date=日期（'Y-m-d'）；
$time=日期（'H:i:s'）；
$INSERCTCONTACTONLY=mysql\u查询（“仅插入联系人（仅联系人电子邮件地址、仅联系人日期、仅联系人时间、仅联系人姓名、仅联系人信息、仅联系人复选框）”值（“$email”、“$date”、“$time”、“$name”、“$message”、“$checkbox”）；
如果（$insertContectoOnly）{
$status='success'；
$message='您的邮件已收到'；
}           
}
否则{
$status='error'；
$message=“哎呀，出现了一个技术错误！”；
}

我对这种方式很满意，因为它通常会给出比负面反馈更多的正面反馈，而且总是合适的。以下是此解决方案的链接：

---

如果你知道如何使它更快或更有效，请让我知道！谢谢，保罗，这是一堵代码墙。你能把范围缩小到你遇到困难的领域吗？是的，在PHP联系人表单中，从以下行开始：

code

$existingContact=mysql\u query（“从

signups

，

contact

其中signup\u email地址=“$email”或contact\u email\u地址=“$email”）<代码>代码您到底有什么问题？什么是恰当的反馈？你得到的反馈有什么问题吗（如果你得到的话）？我的问题是反馈逻辑，特别是针对告知复选框是否被选中的变量，这样我们就可以向用户显示相应的消息。我现在想起来有几件事不对劲。目前，如果复选框未选中，则不应订阅用户，对吗？但是如果他们想订阅，哦，他们已经订阅了。有人知道在复选框被选中或未被选中时如何将变量作为目标吗？干杯：）好的，在这里大声想一想：在联系人表单中，我可以为不希望订阅的电子邮件（必填）创建一个单独的表字段。这样，在MySQL中，可以告诉注册表单不要搜索该组。另一个问题是，如果用户订阅了，那么他们就不能向我们发送消息，因为他们已经订阅了。好的，我将尝试创建一个名为non_subscribed_emails或其他内容的新数据库字段，看看是否有效。

/*Contact Form*/
//ajax call
if(isset($_GET['action'])&& $_GET['action'] == 'contact'){
    mysql_connect('***','***','***');
    mysql_select_db('***');


    //sanitize data
    $email = mysql_real_escape_string($_POST['contact-email']);

    //validate email address - check if input was empty
    if(empty($email)){
        $status = 'error';
        $message = 'You did not enter an email address!';
    }
    else if(!preg_match('/^[^\W][a-zA-Z0-9_]+(\.[a-zA-Z0-9_]+)*\@[a-zA-Z0-9_]+(\.[a-zA-Z0-9_]+)*\.[a-zA-Z]{2,4}$/', $email)){ //validate email address - check if is a valid email address
        $status = "error";
        $message = "You have entered an invalid email address!";
    }
    else {
        $existingContact = mysql_query("SELECT * FROM `signups`, `contact` WHERE signup_email_address='$email' OR contact_email_address='$email'");   
        if(mysql_num_rows($existingContact) < 1){
            //mysql_free_result($existingContact);
            //database insert code

            if ( isset($_POST['contact-checkbox']) ) {
                $checkbox = $_POST['contact-checkbox'];
            }
            else {
                $checkbox = 0;
            }

            $message = $_POST['contact-textarea'];
            $name = $_POST['contact-name'];
            $date = date('Y-m-d');
            $time = date('H:i:s');

            $insertContact = mysql_query("INSERT INTO contact (contact_email_address, contact_date, contact_time, contact_name, contact_message, contact_checkbox) VALUES ('$email','$date','$time','$name','$message','$checkbox')");
            if($insertContact){
                $status = 'success';
                $message = 'your message has been received';    
            }
            else if ($insertContact && $checkbox = $_POST['contact-checkbox']){
                $status = 'success';
                $message = "your message has been received and you have been signed up";        
            }

            else {
                $status = 'error';
                $message = "Oops, there's been a technical error!"; 
            }
        }

        else {
            $status = 'error';
            $message = 'This email address has already been registered!';
        }
    }

    //return the JSON response
    $data = array(
        'status' => $status,
        'message' => $message
    );

    echo json_encode($data);

    exit;
}
?>

$(document).ready(function(){
    $('#newsletter-signup').submit(function(){

    //check the form is not currently submitting
    if($(this).data('formsstatus') !== 'submitting'){

        //setup variables
        var form = $(this),
        formData = form.serialize(),
        formUrl = form.attr('action'),
        formMethod = form.attr('method'), 
        responseMsg = $('#signup-response');

        //add status data to form
        form.data('formsstatus','submitting');

        //show response message - waiting
        responseMsg.hide()
                   .addClass('response-waiting')
                   .text('Please Wait...')
                   .fadeIn(200);

        //send data to server to be validated
        $.ajax({
            url: formUrl,
            type: formMethod,
            data: formData,
            success:function(data){
                //setup variables
                var responseData = jQuery.parseJSON(data), 
                    klass = '';

                //response conditional
                switch(responseData.status){
                    case 'error':
                        klass = 'response-error';
                    break;
                    case 'success':
                        klass = 'response-success';
                    break;  
                }

                //show reponse message
                responseMsg.fadeOut(200,function(){
                    $(this).removeClass('response-waiting')
                           .addClass(klass)
                           .text(responseData.message)
                           .fadeIn(200,function(){
                               //set timeout to hide response message
                               setTimeout(function(){
                                   responseMsg.fadeOut(200,function(){
                                       $(this).removeClass(klass);
                                       form.data('formsstatus','idle');
                                   });
                               },3000)
                            });
                });
            }
        });
    }
    //prevent form from submitting
    return false;
    });
})

$(document).ready(function(){
   $('#contact-form').submit(function(){

    //check the form is not currently submitting
    if($(this).data('formsstatus') !== 'submitting'){ 

        //setup variables
        var form = $(this),
            formData = form.serialize(),
            formUrl = form.attr('action'),
            formMethod = form.attr('method'), 
            responseMsg = $('#contact-response');

        //add status data to form
        form.data('formsstatus','submitting');

        //show response message - waiting
        responseMsg.hide()
                   .addClass('response-waiting')
                   .text('Please Wait...')
                   .fadeIn(200);

        //send data to server
        $.ajax({
            url: formUrl,
            type: formMethod,
            data: formData,
            success:function(data){

                //setup variables
                var responseData = jQuery.parseJSON(data), 
                    klass = '';


                //response conditional
                switch(responseData.status){
                    case 'error':
                        klass = 'response-error';
                    break;
                    case 'success':
                        klass = 'response-success';
                    break;  
                }

                //show reponse message
                responseMsg.fadeOut(200,function(){
                    $(this).removeClass('response-waiting')
                           .addClass(klass)
                           .text(responseData.message)
                           .fadeIn(200,function(){
                               //set timeout to hide response message
                               setTimeout(function(){
                                   responseMsg.fadeOut(200,function(){
                                       $(this).removeClass(klass);
                                       form.data('formsstatus','idle');
                                   });
                               },3000)
                            });
                }); 
            }
        });
    }
    //prevent form from submitting
    return false;
    });
})

CREATE TABLE `contact_only` (
  `contact_only_id` int(10) NOT NULL AUTO_INCREMENT,
  `contact_only_email_address` varchar(250) DEFAULT NULL,
  `contact_only_name` varchar(250) DEFAULT NULL,
  `contact_only_message` varchar(3000) DEFAULT NULL,
  `contact_only_checkbox` tinyint(1) NOT NULL default '0',
  `contact_only_date` date DEFAULT NULL,
  `contact_only_time` time DEFAULT NULL,
  PRIMARY KEY (`contact_only_id`)
) ENGINE=MyISAM AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

if ( isset($_POST['contact-checkbox']) ) {

    $existingContact = mysql_query("SELECT * FROM `signups`, `contact` WHERE signup_email_address='$email' OR contact_email_address='$email'");  
    if(mysql_num_rows($existingContact) < 1){

        $checkbox = $_POST['contact-checkbox'];
        $message = $_POST['contact-textarea'];
        $name = $_POST['contact-name'];
        $date = date('Y-m-d');
        $time = date('H:i:s');

        $insertContact = mysql_query("INSERT INTO contact (contact_email_address, contact_date, contact_time, contact_name, contact_message, contact_checkbox) VALUES ('$email','$date','$time','$name','$message','$checkbox')");

        if($insertContact){
            $status = 'success';
            $message = 'your message has been received and you have been signed up';        
        }
    }
    else {

        $checkbox = $_POST['contact-checkbox'];
        $message = $_POST['contact-textarea'];
        $name = $_POST['contact-name'];
        $date = date('Y-m-d');
        $time = date('H:i:s');

        $insertContact = mysql_query("INSERT INTO contact (contact_email_address, contact_date, contact_time, contact_name, contact_message, contact_checkbox) VALUES ('$email','$date','$time','$name','$message','$checkbox')");

        $status = 'success';
        $message = 'Message received. Note - this email address has already been subscribed!';
    }
}
else if (isset($_POST['contact-checkbox']) == false){
    $checkbox = 0;
    $message = $_POST['contact-textarea'];
    $name = $_POST['contact-name'];
    $date = date('Y-m-d');
    $time = date('H:i:s');

    $insertContactOnly = mysql_query("INSERT INTO contact_only (contact_only_email_address, contact_only_date, contact_only_time, contact_only_name, contact_only_message, contact_only_checkbox) VALUES ('$email','$date','$time','$name','$message','$checkbox')");

    if ($insertContactOnly) {
        $status = 'success';
        $message = 'your message has been received';
    }           
}

else {
    $status = 'error';
    $message = "Oops, there's been a technical error!"; 
}