CSRF token could not be verified
<p>I know this has been asked already, but my question is a bit different. In my .php file, I have:</p>

<pre><code>&lt;?php
/* @var $this SiteController */
$this-&gt;pageTitle=Yii::app()-&gt;name;
?&gt;

&lt;div id="page-content"&gt;
    &lt;h1 class="gasparregular"&gt;Welcome back, &lt;?php echo Yii::app()-&gt;user-&gt;table-&gt;name ?&gt;!&lt;/h1&gt;
    &lt;h2 style="color:white;"&gt;Current Promotion: &lt;?php echo Yii::app()-&gt;user-&gt;table-&gt;promo ?&gt;&lt;/h2&gt;
    &lt;span class="help-text"&gt;To check, please enter their xxxID:&lt;/span&gt;

    &lt;?php
    if(isset($_POST['submit'])) 
    {

        $message=
        'First Name: '.$_POST['xxxid'].'&lt;br /&gt;
        Last Name: '.$_POST['xxxid'].'&lt;br /&gt;
        Phone:  '.$_POST['xxxid'].'&lt;br /&gt;
        Email:  '.$_POST['xxxid'].'&lt;br /&gt;
        Comments: '.$_POST['xxxid'].'
        ';

        require "phpmailer/class.phpmailer.php";

        // Instantiate Class  
        $mail = new PHPMailer();  

        // Set up SMTP  
        $mail-&gt;IsSMTP();               
        $mail-&gt;SMTPAuth = true;         
        $mail-&gt;SMTPSecure = "ssl"; 
        $mail-&gt;Host = "smtp.gmail.com"; 
        $mail-&gt;Port = 465; 
        $mail-&gt;Encoding = '7bit';

        // Authentication  
        $mail-&gt;Username   = "xxx@xxx.com";
        $mail-&gt;Password   = "dswdcssd1yfs";

        // Compose
        $mail-&gt;SetFrom("xxx@xxx.com");
        $mail-&gt;AddReplyTo("xxx@xxx.com");
        $mail-&gt;Subject = "Hello";
        $mail-&gt;MsgHTML($message);

        // Send To  
        $mail-&gt;AddAddress("ggggdssae@hotmail.com", "Recipient Name");
        $result = $mail-&gt;Send();
        $message = $result ? 'Successfully Sent!' : 'Sending Failed!';     

        unset($mail);
        $URL="google.ca"; 

        header ("Location: $URL"); 
    }
    ?&gt;

&lt;form name="form1" id="form1" action="" method="post"&gt;
    &lt;fieldset&gt;
        &lt;input type="text" name="xxxid" placeholder="xxx ID" /&gt;
        &lt;br /&gt;
        &lt;input type="submit" name="submit" value="Validate" /&gt;
    &lt;/fieldset&gt;
&lt;/form&gt;
</code></pre>

<p>When I enter a number and click the validate button, it sends an email. It works fine in my local environment without Yii. But when I put it on the live site where it uses Yii, I get:</p>

<blockquote>
  <p>ErrThe CSRF token could not be verified.</p>
</blockquote>