javascript - 在 JS 中验证 secureimage 验证码

标签 javascript php jquery html ajax

经过多次不同的尝试，我终于能够将有效的验证码添加到我的引导联系表单中。我最终使用了 phpcaptcha.org 的 SecureImage。它似乎工作正常 - 如果验证码输入正确，它会发送电子邮件，如果输入错误，它不会发送电子邮件。但是，如果输入了错误的验证码，我无法让它显示错误消息。相反，它仍然显示一条消息，表明电子邮件已成功发送，但实际上并未成功。我的联系表单使用带有 ajax 函数的 contact_me.js 文件来验证表单内容并将其发送到 contact_me.php 文件进行处理。该表单使用 jqBoostrapValidation.js 与 contact_me.js 结合进行验证。

如果输入了错误的验证码，如何让它在 html 页面上发布错误消息(与其他字段验证一样)。我是 PHP 和 JS/Ajax 新手，我使用的联系表单是 startBootstrap.com 提供的模板。我假设我需要某种回调函数将验证码失败结果从 PHP 返回到 contact_me.js 文件以显示错误 - 但我不知道如何执行此操作。任何帮助将不胜感激。

HTML:

    <form name="sentMessage" id="contactForm" novalidate>
                    <div class="row control-group">
                        <div class="form-group col-xs-12 floating-label-form-group controls">
                            <label>Name</label>
                            <input type="text" class="form-control" placeholder="Name" id="name" required data-validation-required-message="Please enter your name.">
                            <p class="help-block text-danger"></p>
                        </div>
                    </div>
                    <div class="row control-group">
                        <div class="form-group col-xs-12 floating-label-form-group controls">
                            <label>Email Address</label>
                            <input type="email" class="form-control" placeholder="Email Address" id="email" required data-validation-required-message="Please enter your email address.">
                            <p class="help-block text-danger"></p>
                        </div>
                    </div>
                    <div class="row control-group">
                        <div class="form-group col-xs-12 floating-label-form-group controls">
                            <label>Phone Number</label>
                            <input type="tel" class="form-control" placeholder="Phone Number" id="phone" required data-validation-required-message="Please enter your phone number.">
                            <p class="help-block text-danger"></p>
                        </div>
                    </div>
                    <div class="row control-group">
                        <div class="form-group col-xs-12 floating-label-form-group controls">
                            <label>Message</label>
                            <textarea rows="5" class="form-control" placeholder="Message" id="message" required data-validation-required-message="Please enter a message."></textarea>
                            <p class="help-block text-danger"></p>
                        </div>
                    </div>
                    <br>        
                    <img id="captcha" src="/securimage/securimage_show.php" alt="CAPTCHA Image" />
                    <input type="text" name="captcha_code" size="10" id="captcha_code" maxlength="6" />

[ 不同图像 ]

发送

contact_me.js:

    $(function() {

    $("input,textarea").jqBootstrapValidation({
        preventSubmit: true,
        submitError: function($form, event, errors) {
            // additional error messages or events
        },
        submitSuccess: function($form, event) {
            // Prevent spam click and default submit behaviour
            $("#btnSubmit").attr("disabled", true);
            event.preventDefault();

            // get values from FORM
            var name = $("input#name").val();
            var email = $("input#email").val();
            var phone = $("input#phone").val();
            var captcha_code = $("input#captcha_code").val();
            var message = $("textarea#message").val();
            var firstName = name; // For Success/Failure Message
            // Check for white space in name for Success/Fail message
            if (firstName.indexOf(' ') >= 0) {
                firstName = name.split(' ').slice(0, -1).join(' ');
            }
            $.ajax({
                url: "././mail/contact_me.php",
                type: "POST",
                data: {
                    name: name,
                    phone: phone,
                    email: email,
                    captcha_code: captcha_code,
                    message: message
                },
                cache: false,
                success: function() {
                    // Enable button & show success message
                    $("#btnSubmit").attr("disabled", false);
                    $('#success').html("<div class='alert alert-success'>");
                    $('#success > .alert-success').html("<button type='button' class='close' data-dismiss='alert' aria-hidden='true'>&times;")
                        .append("</button>");
                    $('#success > .alert-success')
                        .append("<strong>Your message has been sent. </strong>");
                    $('#success > .alert-success')
                        .append('</div>');

                    //clear all fields
                    $('#contactForm').trigger("reset");
                },
                error: function() {
                    // Fail message
                    $('#success').html("<div class='alert alert-danger'>");
                    $('#success > .alert-danger').html("<button type='button' class='close' data-dismiss='alert' aria-hidden='true'>&times;")
                        .append("</button>");
                    $('#success > .alert-danger').append("<strong>Sorry " + firstName + ", it seems that my mail server is not responding. Please try again later!");
                    $('#success > .alert-danger').append('</div>');
                    //clear all fields
                    $('#contactForm').trigger("reset");
                },
            })
        },
        filter: function() {
            return $(this).is(":visible");
        },
    });

    $("a[data-toggle=\"tab\"]").click(function(e) {
        e.preventDefault();
        $(this).tab("show");
    });
});

// When clicking on Full hide fail/success boxes
$('#name').focus(function() {
    $('#success').html('');
});

contact_me.php:

<?php
session_start();
// Check for empty fields
if(empty($_POST['name'])        ||
empty($_POST['email'])      ||
empty($_POST['phone'])      ||
empty($_POST['message'])    ||
!filter_var($_POST['email'],FILTER_VALIDATE_EMAIL))
{
echo "No arguments Provided!";
return false;
}

include_once $_SERVER['DOCUMENT_ROOT'] . '/securimage/securimage.php';
$securimage = new Securimage();

if ($securimage->check($_POST['captcha_code']) == false) {
  // the code was incorrect
  echo "The security code entered was incorrect.<br /><br />";
  echo "Please go <a href='javascript:history.go(-1)'>back</a> and try again.";
  exit;
}


$name = $_POST['name'];
$email_address = $_POST['email'];
$phone = $_POST['phone'];
$message = $_POST['message'];

// Create the email and send the message
$to = 'info@rexmillerportfolio.com'; // Add your email address inbetween the '' replacing yourname@yourdomain.com - This is where the form will send a message to.
$email_subject = "Portfolio Website Message:  $name";
$email_body = "You have received a new message from your portfolio website contact form.\n\n"."Here are the details:\n\nName: $name\n\nEmail: $email_address\n\nPhone: $phone\n\nMessage:\n$message";
$headers = "From: noreply@rexmillerportfolio.com\n"; // This is the email address the generated message will be from. We recommend using something like noreply@yourdomain.com.
$headers .= "Reply-To: $email_address"; 
mail($to,$email_subject,$email_body,$headers);
return true; 

?>

最佳答案

它在表单方面看起来成功的原因是因为无论验证码的值或联系表单中的错误如何，都会调用 jQuery 的 ajax success 方法。这仅意味着服务器返回了成功的响应。

您需要稍微修改 PHP 和 Javascript 代码来处理表单错误。

以下是更改 PHP 代码以返回 JSON 响应的建议，然后您可以在客户端检查该响应:

<?php
session_start();
$response = array('error' => true, 'message' => 'OK');

// Check for empty fields
if(empty($_POST['name'])        ||
empty($_POST['email'])      ||
empty($_POST['phone'])      ||
empty($_POST['message'])    ||
!filter_var($_POST['email'],FILTER_VALIDATE_EMAIL))
{
    $response['message'] = "No arguments Provided!";
    die(json_encode($response));
}

include_once $_SERVER['DOCUMENT_ROOT'] . '/securimage/securimage.php';
$securimage = new Securimage();

if ($securimage->check($_POST['captcha_code']) == false) {
  // the code was incorrect
    $response['message'] = "The security code entered was incorrect.";
    die(json_encode($response));
}


$name = $_POST['name'];
$email_address = $_POST['email'];
$phone = $_POST['phone'];
$message = $_POST['message'];

// Create the email and send the message
$to = 'info@rexmillerportfolio.com'; // Add your email address inbetween the '' replacing yourname@yourdomain.com - This is where the form will send a message to.
$email_subject = "Portfolio Website Message:  $name";
$email_body = "You have received a new message from your portfolio website contact form.\n\n"."Here are the details:\n\nName: $name\n\nEmail: $email_address\n\nPhone: $phone\n\nMessage:\n$message";
$headers = "From: noreply@rexmillerportfolio.com\n"; // This is the email address the generated message will be from. We recommend using something like noreply@yourdomain.com.
$headers .= "Reply-To: $email_address"; 
mail($to,$email_subject,$email_body,$headers);

$response['error'] = false;

die(json_encode($response));

然后像这样修改 Javascript 以查看 JSON 响应:

$(function() {

    $("input,textarea").jqBootstrapValidation({
        preventSubmit: true,
        submitError: function($form, event, errors) {
            // additional error messages or events
        },
        submitSuccess: function($form, event) {
            // Prevent spam click and default submit behaviour
            $("#btnSubmit").attr("disabled", true);
            event.preventDefault();

            // get values from FORM
            var name = $("input#name").val();
            var email = $("input#email").val();
            var phone = $("input#phone").val();
            var captcha_code = $("input#captcha_code").val();
            var message = $("textarea#message").val();
            var firstName = name; // For Success/Failure Message
            // Check for white space in name for Success/Fail message
            if (firstName.indexOf(' ') >= 0) {
                firstName = name.split(' ').slice(0, -1).join(' ');
            }
            $.ajax({
                url: "././mail/contact_me.php",
                type: "POST",
                dataType: 'json',
                data: {
                    name: name,
                    phone: phone,
                    email: email,
                    captcha_code: captcha_code,
                    message: message
                },
                cache: false,
                success: function(response) {
                    if (response.error) {
                        alert(response.message);
                        // TODO: customize to use dialog to show error
                    } else {
            // Enable button & show success message
            $("#btnSubmit").attr("disabled", false);
            $('#success').html("<div class='alert alert-success'>");
            $('#success > .alert-success').html("<button type='button' class='close' data-dismiss='alert' aria-hidden='true'>&times;")
                .append("</button>");
            $('#success > .alert-success')
                .append("<strong>Your message has been sent. </strong>");
            $('#success > .alert-success')
                .append('</div>');

            //clear all fields
            $('#contactForm').trigger("reset");
                    }
                },
                error: function() {
                    // Fail message
                    $('#success').html("<div class='alert alert-danger'>");
                    $('#success > .alert-danger').html("<button type='button' class='close' data-dismiss='alert' aria-hidden='true'>&times;")
                        .append("</button>");
                    $('#success > .alert-danger').append("<strong>Sorry " + firstName + ", it seems that my mail server is not responding. Please try again later!");
                    $('#success > .alert-danger').append('</div>');
                    //clear all fields
                    $('#contactForm').trigger("reset");
                },
            })
        },
        filter: function() {
            return $(this).is(":visible");
        },
    });

    $("a[data-toggle=\"tab\"]").click(function(e) {
        e.preventDefault();
        $(this).tab("show");
    });
});

// When clicking on Full hide fail/success boxes
$('#name').focus(function() {
    $('#success').html('');
});

关于javascript - 在 JS 中验证 secureimage 验证码，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/32153482/

上一篇：javascript - 我应该将 "document.getElementById("").innerHTML = "";"放在我的 Javascript 中的哪里？

下一篇：javascript - 添加行后如何避免下拉重复[AngularJS]

相关文章：

javascript - Rails App 中的 JS 仅在第一次加载

javascript - 如何获取参数对象的子集？ (关于可变大小的参数)

php - mysql - if value = 0 缩短 where 语句

javascript - 获取当前 function() 作用域的所有变量

javascript - jQuery 可排序问题开/关检查

PHP:无需登录即可为每个用户提供唯一的 ID!

php日期转换函数的月份和日期值问题

javascript - 如何从数据库获取时间后开始倒计时？

php - 从 php 传递到 AJAX

javascript - 需要帮助修复具有相对/绝对路径的 webpack.config

©2024 IT工具网  联系我们