php 带有验证码的简单联系表单 HTML？

Simple contact form HTML with Captcha?

提问by 5AMWE5T

I am looking for a simple HTML for a contact form that has ReCaptcha or some type of anti-spam features. I tried multiple tutorials but they are all complicated and I can't get any to work. All I need is an Name, Email, and Message field (and also the ReCaptcha and submit button). Does anyone know where I can find a simple contact form HTML?

我正在为具有 ReCaptcha 或某种类型的反垃圾邮件功能的联系表单寻找一个简单的 HTML。我尝试了多个教程，但它们都很复杂，我无法使用任何教程。我只需要一个姓名、电子邮件和消息字段（以及 ReCaptcha 和提交按钮）。有谁知道我在哪里可以找到一个简单的联系表单 HTML？

采纳答案by Professor

If you have been struggling to implement recaptcha just go for

如果你一直在努力实现 recaptcha，那就去吧

$a=rand(2,9); // this will get a number between 2 and 9
$b=rand(2,9); // this will also get a number between 2 and 9. You can change this according to your wish

$c=$a+$b;

On the php page just show

在 php 页面上只显示

echo $a."+".$b."="<input type="text" name="recaptcha" />

and check whether the textbox value is equal to $c.

并检查文本框值是否等于 $c。

This is the most simple recaptcha sort of thing you can implement to prevent bots.

这是您可以实施的最简单的 recaptcha 类型的事情来防止机器人。

回答by Professor

Try thissmall script: You can easily use it in forums as

试试这个小脚本：您可以轻松地在论坛中使用它作为

<img src="tools/showCaptcha.php" />
<input type="text" name="captcha"/>

and it will store captcha value in an session variable example

它将在会话变量示例中存储验证码值

if ($_POST["captcha"] == $_SESSION['captcha']) { ... } else { ... }

回答by Jay Patel

Step 1

第1步

• You need some code to generate a graphical font image representation web captcha. you must have GD libraryfor generating font image.

  <?php
      session_start();
      $RandomStr = md5(microtime());
      $ResultStr = substr($RandomStr,0,5);
      $NewImage =imagecreatefromjpeg("bgimage.jpg");
  
      $LineColor = imagecolorallocate($NewImage,233,239,239);
      $TextColor = imagecolorallocate($NewImage, 255, 255, 255);
      imageline($NewImage,1,1,40,40,$LineColor);
      imageline($NewImage,1,100,60,0,$LineColor);
  
      $font = imageloadfont("font.gdf");
      imagestring ($NewImage, $font, 5, 5, $ResultStr, $TextColor ); 
      $_SESSION['originalkey'] = $ResultStr;  //store the original coderesult in session variable
  
      header("Content-type: image/jpeg");
      imagejpeg($NewImage);
  ?>
  

  Step 2

• Now your form to call captcha.

  <form action="submit.php" method="post" name="form1">
      Name:
      <input type="text" name="name" value="" /> <br />
      Email Address:
      <input type="text" name="email" value="" /> <br />     
      Message:
      <textarea name="message" cols="30" rows="6"></textarea> <br />
      <img src="php_captcha.php" />
      <input name="captcha" type="text" id="captcha" size="15" /> <br />
  
      <input type="submit" name="submit" value="Submit" />
      <input type="reset" name="reset" value="clear"/>
  </form>
  

• 您需要一些代码来生成图形字体图像表示网络验证码。你必须有GD 库来生成字体图像。

  <?php
      session_start();
      $RandomStr = md5(microtime());
      $ResultStr = substr($RandomStr,0,5);
      $NewImage =imagecreatefromjpeg("bgimage.jpg");
  
      $LineColor = imagecolorallocate($NewImage,233,239,239);
      $TextColor = imagecolorallocate($NewImage, 255, 255, 255);
      imageline($NewImage,1,1,40,40,$LineColor);
      imageline($NewImage,1,100,60,0,$LineColor);
  
      $font = imageloadfont("font.gdf");
      imagestring ($NewImage, $font, 5, 5, $ResultStr, $TextColor ); 
      $_SESSION['originalkey'] = $ResultStr;  //store the original coderesult in session variable
  
      header("Content-type: image/jpeg");
      imagejpeg($NewImage);
  ?>
  

  第2步

• 现在您的表单调用验证码。

  <form action="submit.php" method="post" name="form1">
      Name:
      <input type="text" name="name" value="" /> <br />
      Email Address:
      <input type="text" name="email" value="" /> <br />     
      Message:
      <textarea name="message" cols="30" rows="6"></textarea> <br />
      <img src="php_captcha.php" />
      <input name="captcha" type="text" id="captcha" size="15" /> <br />
  
      <input type="submit" name="submit" value="Submit" />
      <input type="reset" name="reset" value="clear"/>
  </form>
  

Step 3

第 3 步

• Now this is last step to form submiting time check capcha validation. Using session information.

  <?php
        $originalkey = substr($_SESSION['originalkey'],0,5);  //session of captcha
        $captcha = $_REQUEST['captchacode'];
        if($captcha!=$originalkey){
          print_error("<b> Captcha does not match, Go back and try again.</b>");
        }
  ?>
  

• 现在这是表单提交时间检查验证码验证的最后一步。使用会话信息。

  <?php
        $originalkey = substr($_SESSION['originalkey'],0,5);  //session of captcha
        $captcha = $_REQUEST['captchacode'];
        if($captcha!=$originalkey){
          print_error("<b> Captcha does not match, Go back and try again.</b>");
        }
  ?>
  

Hope this help you!

希望这对你有帮助！

回答by Junaid

Visit here this might solve your problem.Its simple form with explanation.

访问这里这可能会解决您的问题。其简单的形式与解释。

http://www.html-form-guide.com/contact-form/html-contact-form-captcha.html

http://www.html-form-guide.com/contact-form/html-contact-form-captcha.html