4
What happens when you run this script?
<?php
$im = ImageCreate(200, 200);
$red = ImageColorAllocate($im, 0x00, 0xFF, 0x00);
$green = ImageColorAllocate($im, 0xFF, 0x00, 0x00);
$blue = ImageColorAllocate($im, 0x00, 0x00, 0xFF);
ImageFilledRectangle($im, 50, 50, 150, 150, $green);
ImageFilledRectangle($im, 75, 75, 125, 125, $blue);
(ImageTypes() & IMG_PNG) or die("PNG is not supportedn");
header('Content-Type: image/png');
ImagePNG($im);
?>