WordPress.org

Support

Support » Plugins and Hacks » Really Simple CAPTCHA » Can I make the captcha more complicated looking or longer?

Can I make the captcha more complicated looking or longer?

Viewing 5 replies - 1 through 5 (of 5 total)
  • I too would like to make a longer and more complicated captcha. It appears some scripts are able to bypass the current length and spam through Contact Form 7. I did try change the character length from 4 to 10:

    /* Length of a word in an image */
    $this->char_length = 4;

    The image seems to disappear after 4.5 characters and I could not get the length any longer, even editing this section:

    /* Array of CAPTCHA image size. Width and height */
    $this->img_size = array( 72, 24 );

    Same here –
    It generates the image with maximum 4.5 symbols.
    Can we do something about it?

    Also interested in a way to do this.

    count me in as well

    Set the size to Large using this tag in your Contact Form 7 form:
    [captchac your-captcha size:l]

    In Really Simple CAPTCHA change the char_length to 8 in really-simple-captcha.php:

    /* Length of a word in an image */
    $this->char_length = 8;

    There seems to be a bug in the img_size parameter in really-simple-captcha.php.
    The Width settings is ignored so I hard-coded the setting.

    Change:
    if ( $im = imagecreatetruecolor( $this->img_size[0], $this->img_size[1] ) ) {
    To:
    if ( $im = imagecreatetruecolor( 184, 28 ) ) {

    The Width of the CAPTCHA image is also hard-coded in Contact Form 7.
    So you must also edit the file: modules\captcha.php

    Change:
    case 'l':
       $op['img_size'] = array( 84, 28 );
    To:
       $op['img_size'] = array( 184, 28 );

Viewing 5 replies - 1 through 5 (of 5 total)
  • The topic ‘Can I make the captcha more complicated looking or longer?’ is closed to new replies.
Skip to toolbar