All,
I have issue about generating random images using GD here in Zymic, I have tested it locally for several times already with success but once I uploaded it here it seem can't display the image. I have the same directory structure here in Zymic and locally so I am speculating that it's not with the source-code and suggesting that it could be a compatibility issue.
Need your help...
----------------------------> Source <--------------------------------------
<?php
session_start();
class SecurityImages {
var $font = 'ANODETON.ttf';
function generateCode($characters) {
/* list all possible characters, similar looking characters and vowels have been removed */
$possible = '234789LADFGHJKQWERTYUPZXCVBNM';
$code = '';
$i = 0;
while ($i < $characters) {
$code .= substr($possible, mt_rand(0, strlen($possible)-2), 1);
$i++;
}
return $code;
}
function SecurityImages($width='130',$height='40',$characters='5') {
$code = $this->generateCode($characters);
/* font size will be 75% of the image height */
$font_size = $height * 0.78;
$image = @imagecreate($width, $height) or die('Cannot initialize new GD image stream');
/* set the colours */
$background_color = imagecolorallocate($image, 250,250,250);
$text_color = imagecolorallocate($image, 235, 100, 140);
$noise_color = imagecolorallocate($image, 200, 230, 190);
/* generate random dots in background */
for( $i=0; $i<($width*$height)/5; $i++ ) {
imagefilledellipse($image, mt_rand(0,$width), mt_rand(0,$height), 2, 3, $noise_color);
}
/* generate random lines in background */
for( $i=0; $i<($width*$height)/900; $i++ ) {
imageline($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 - $textbox[5])/2;
imagettftext($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);
$_SESSION['security_code'] = $code;
}
}
$width = isset($_GET['width']) ? $_GET['width'] : '120';
$height = isset($_GET['height']) ? $_GET['height'] : '40';
$characters = isset($_GET['characters']) && $_GET['characters'] > 1 ? $_GET['characters'] : '6';
$outputs = new SecurityImages($width,$height,$characters);
?>