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<?PHP
// Adapted for The Art of Web: www.the-art-of-web.com
// Please acknowledge use of this code by including this header.
// initialise image with dimensions of 120 x 30 pixels
$image = @imagecreatetruecolor(120, 30) or die("Cannot Initialize new GD image stream");
// set background to white and allocate drawing colours
/*
$background = imagecolorallocate($image, 0xFF, 0xFF, 0xFF);
imagefill($image, 0, 0, $background);
$linecolor = imagecolorallocate($image, 0xCC, 0xCC, 0xCC);
$textcolor = imagecolorallocate($image, 0x33, 0x33, 0x33);
*/
// set background and allocate drawing colours
$background = imagecolorallocate($image, 0x66, 0x99, 0x66);
imagefill($image, 0, 0, $background);
$linecolor = imagecolorallocate($image, 0x99, 0xCC, 0x99);
$textcolor1 = imagecolorallocate($image, 0x00, 0x00, 0x00);
$textcolor2 = imagecolorallocate($image, 0xFF, 0xFF, 0xFF);
// draw random lines on canvas
for($i=0; $i < 7; $i++) {
imagesetthickness($image, rand(1,3));
imageline($image, 0, rand(0,30), 120, rand(0,30), $linecolor);
}
session_start();
// add random digits to canvas
$digit = '';
$fonts = array();
$fonts[] = "ttf-dejavu/DejaVuSerif-Bold.ttf";
$fonts[] = "ttf-dejavu/DejaVuSans-Bold.ttf";
$fonts[] = "ttf-dejavu/DejaVuSansMono-Bold.ttf";
$seck="ᵧt";
for($x = 15; $x <= 95; $x += 20) {
//$digit .= ($num = rand(0, 9));
//imagechar($image, rand(3, 5), $x, rand(2, 14), $num, $textcolor);
//$textcolor = (rand() % 2) ? $textcolor1 : $textcolor2;
//$digit .= ($num = rand(0, 9));
//imagettftext($image, 20, rand(-30,30), $x, rand(20, 42), $textcolor, $fonts[array_rand($fonts)], $num);
$textcolor = (rand() % 2) ? $textcolor1 : $textcolor2;
$digit .= ($num = rand(0, 9));
imagechar($image, rand(3, 5), $x, rand(2, 14), $num, $textcolor);
}
// record digits in session variable
$_SESSION['digit'] = $digit.$seck;
// display image and clean up
header('Content-type: image/png');
imagepng($image);
imagedestroy($image);
?>