Could not get Captcha image in CodeIgniter
According to CodeIgniter API for the create_captcha function those are the possible reasons for getting a Boolean false.
61: if ($img_path == '' OR $img_url == '') 62: { 63: return FALSE; 64: } 65: 66: if ( ! @is_dir($img_path)) 67: { 68: return FALSE; 69: } 70: 71: if ( ! is_writable($img_path)) 72: { 73: return FALSE; 74: } 75: 76: if ( ! extension_loaded('gd')) 77: { 78: return FALSE; 79: }So make sure that:
You send the img_path and img_url parameters (Notice my commentregarding a possible typo in the parameter's name).
The img_path is an existing directory which is also writable
You have the GD extension installed.
Path/URL
I believe it's because you're using base_url() . 'captcha' as your img_path.base_url() returns a url in the format of: http://www.domain.com/ while path should be in another format (relative), something like: ./directory/captache/.