The captcha image won't display (it just shows a red cross).
In my view file I use the following:
<div id="captchaID" ><?php echo $this->Html->image($this->Html-
>url(array('controller'=>'users', 'action'=>'captcha'), true),
array('style'=>'','vspace'=>2)); ?>
</div>
.... in my controller I have the following function / action:
function captcha() {
$this->autoRender = false;
//$this->layout = 'ajax';
$this->Captcha = new CaptchaComponent(); //make instance
$this->Captcha->startup($this); //and do some manual calling
$this->Captcha->create();
}
}
... and the create function in the component is as follows:
function create($width='120',$height='40',$characters='6') {
$code = $this->generateCode($characters);
/* font size will be 75% of the image height */
$font_size = $height * 0.70;
$image = @imagecreate($width, $height) or die('Cannot initialize new
GD image stream');
/* set the colours */
$background_color = imagecolorallocate($image, 220, 220, 220);
$text_color = imagecolorallocate($image, 10, 30, 80);
$noise_color = imagecolorallocate($image, 150, 180, 220);
/* generate random dots in background */
for( $i=0; $i<($width*$height)/3; $i++ ) {
imagefilledellipse($image, mt_rand(0,$width),
mt_rand(0,$height), 1,
1, $noise_color);
}
/* generate random lines in background */
for( $i=0; $i<($width*$height)/150; $i++ ) {
imageline($image, mt_rand(0,$width), mt_rand(0,$height),
mt_rand(0,$width), mt_rand(0,$height), $noise_color);
}
/* create textbox and add text */
$textbox = imagettfbbox($font_size, 0, $this->font, $code) or
die('Error in imagettfbbox function');
$x = ($width - $textbox[4])/2;
$y = ($height - $textbox[5])/2;
$y -= 5;
imagettftext($image, $font_size, 0, $x, $y, $text_color, $this-
>font , $code) or die('Error in imagettftext function');
/* output captcha image to browser */
header('Content-Type: image/jpeg');
imagejpeg($image);
imagedestroy($image);
$this->Controller->Session->write('security_code',$code);
}
(which I got from
http://www.devarticles.in/cakephp/simple-captcha-component-for-cakephp-new/
)
Any ideas as to why the image is not displaying? Is there a way that
I can debug this?
Thanks.
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