public static function GenerateCaptcha()
{
$Session = new Session();
flush();
ob_clean();
if (isset($_SESSION['generated_captcha']) && $_SESSION['generated_captcha'] != '') {
$Session->unsetKeys(['generated_captcha']);
}
$InitialString = str_shuffle("abcdefghijklmnopqrstuvwxyz1234567890");
$RandomString = substr($InitialString, 0, 9);
$_SESSION['generated_captcha'] = $RandomString;
$Session->updateSession($_SESSION);
$CreateBlankImage = ImageCreate(200, 70) or die("Cannot Initialize new GD image stream");
$BackgroundColor = ImageColorAllocateAlpha($CreateBlankImage, 255, 255, 255, 127);
imagefill($CreateBlankImage, 0, 0, 0x7fff0000);
$BackgroundColor = ImageColorAllocate($CreateBlankImage, 204, 255, 51);
$TextColor = ImageColorAllocate($CreateBlankImage, 51, 51, 255);
ImageString($CreateBlankImage, 5, 50, 25, $RandomString, $TextColor);
ImagePng($CreateBlankImage);
}
