PHP/Graphics Image/Rectangle
Drawing a Filled Rectangle with imagefilledrectangle()
<?php
header("Content-type: image/gif");
$image = imagecreate( 200, 200 );
$red = imagecolorallocate($image, 255,0,0);
$blue = imagecolorallocate($image, 0,0,255 );
imagefilledrectangle( $image, 19, 19, 179, 179, $blue );
imagegif( $image );
?>
Fill Rectangle
<html>
<body>
<?php
$pic=ImageCreate(600,600);
$col1=ImageColorAllocate($pic,200,200,200);
$col2=ImageColorAllocate($pic,0,0,255);
ImageFilledRectangle($pic,1,1,100,100,$col2);
ImagePNG($pic,"pic.png");
ImageDestroy($pic);
?>
<img src="pic.png" border=0>
</body>
</html>