title: How to change the name of an image that is generated by CodeIgniter Captcha?
body: <p>I am using CodeIgniter Captcha Helper to generate captcha images for my website. It is working perfectly fine. But the only problem is that it generates a random name for the captcha image. How can I change the name of the image that is generated by CodeIgniter Captcha Helper? I have used the following code for generating my captcha.</p>
  
  <pre><code>$this-&gt;load-&gt;helper('captcha');
  $keyword = $this-&gt;generate_random_keyword();
  $vals = array(
      'word'  =&gt; $keyword,
      'img_path'     =&gt; './captcha/',
      'img_url'     =&gt; base_url() . '/captcha/',
      'img_width'     =&gt; '150',
      'img_height' =&gt; '35',
      'border' =&gt; 0, 
      'font_path'  =&gt; './fonts/texb.ttf',
      'expiration' =&gt; 3600
  );
  $captcha = create_captcha($vals);
  </code></pre>