<?php header("Content-type: image/gif"); $image = imagecreate( 200, 200 ); $red = imagecolorallocate($image, 255,0,0); $blue = imagecolorallocate($image, 0,0,255 ); imageline( $image, 0, 0, 199, 199, $blue ); imagefill( $image, 0, 199, $blue ); imagegif($image); ?>