define("WIDTH", 300);
define("HEIGHT", 100);
define("F_SIZE", 40);
define("F_ANGLE", 20);
define("F_FONT", "myfont.ttf");
define("F_TEXT", "PHP Unleashed");
$img = imagecreate(WIDTH, HEIGHT);
$white = imagecolorallocate($img, 255,255,255);
$black = imagecolorallocate($img, 0,0,0);
imagerectangle($img, 0,0,WIDTH-1,HEIGHT-1, $black);
$box = imagettfbbox(F_SIZE, F_ANGLE, F_FONT, F_TEXT);
$start_x = (WIDTH/2) - (int)(($box[0] + $box[2] + $box[4] + $box[6])/4);
$start_y = (HEIGHT/2) - (int)(($box[1] + $box[3] + $box[5] + $box[7])/4);
$polygon = array($box[0]+$start_x,
$box[1]+$start_y,
$box[2]+$start_x,
$box[3]+$start_y,
$box[4]+$start_x,
$box[5]+$start_y,
$box[6]+$start_x,
$box[7]+$start_y);
imagepolygon($img, $polygon, 4, $black);
imageTTFtext($img, F_SIZE, F_ANGLE, $start_x,
$start_y, $black, F_FONT, F_TEXT);
header("Content-Type: image/png");
imagepng($img);
?>