如何为我自己的联系表添加自己的验证码 [英] how to add own CAPTCHA for my own contact form

问题描述

我正在使用Dreamweaver CC创建表单。该表格是用php编写的，运行良好。现在我想添加验证码图像或文本作为验证方法。

I am creating a form using dreamweaver cc. the form is written in php and working good. now i want to add captcha image or text for verification method. how to possible using my code to add a captcha.

我的表单看起来像这样

<table width="100%" border="1" align="center" cellpadding="2">
<form method="post" action="contact_process.php"><tr>
<td><input type="text" name="name" placeholder="Enter Name" class="add_input_data" required/></td>
</tr>
 <tr>
 <td><input type="text" name="mobile" placeholder="Enter Mobile" class="add_input_data" required/></td>
</tr>
<tr>
 <td><select name="location" class="add_input_data">
 <option selected disabled>Location</option>
<option value="chittore">Chittore</option>
<option value="koduru">Koduru</option>
<option value="other">Other</option>
</select></td>
</tr>
<tr>
 <td><textarea name="address" class="add_input_textarea" placeholder="Enter Address" required></textarea></td>
</tr>
<tr>
 <td><input type="submit" name="submit" value="Submit" class="add_input_submit" align="right"/></td>
</tr></form>
</table>

我的表单处理脚本看起来像这样

my form processing script is looking like this

<?php 

$name = $_POST['name'];  
$mobile = $_POST['mobile'];  
$location = $_POST['location']; 
$address = $_POST['address']; 



$formcontent="From: $name \n Mobile : $mobile \n Location: $location \n      Address : $address";  
 $recipient = "[e-mail]";  
  $subject = "New Connection Query";  


  mail($recipient, $subject, $formcontent) or die("Error!");  

 header('Location: thankyou.php');

 ?>

和我的thankyou.php页面，其中包含一些内容。

and my thankyou.php page with some content. here i am not showing.

现在我有两个问题

1）当用户填写数据并单击提交按钮，表单将显示来自thankyou.php的成功完整消息。但是我想在页面中显示成功的完整消息（简单滚动成功的完整消息）。
2）我想为此表格添加一个验证码。

1) when a user fill the data and click the submit button, the form display success full message from thankyou.php. but i want to display success full message with in a page(with simple scrolling success full message). 2) I want to add a captcha for this form. How to do this ?

推荐答案

用于您使用的验证码， rand（）方法，如：

for captcha you used, rand() method like:

<?php 
  $a = rand(1,9);
  $b = rand(1,9);
  $c = $a + $b; 
?>

在html中，写

<h5> What is <?php echo $a; ?> + <?php echo $b; ?> ? </h5>
<input type="text" name="txt_value" id="txt_value" />

现在您可以将两个值（$ c与$（＃ txt_value）。val（））可以在jquery中或在表单提交时使用，只要让您轻松即可。

And now you can match both values ( $c with $("#txt_value").val() ) in jquery or on form submission, whatever make you easy.

希望它会有所帮助。 。

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