Create transparent rectangles

Is there a way to create multiple rectangles with transparency in my image? Check out the code snippet below.

$img = imagecreatetruecolor(400, 400);
//$img =imagecreatefromjpeg("water.jpg");
$imageX = imagesx($img);
$imageY = imagesy($img);
imagealphablending($img, false);
imagesavealpha($img, true);
$transparent = imagecolorallocatealpha($img, 255,255,255, 127);
$white = imagecolorallocate($img, 000,255,255);
imagefilledrectangle($img, 10, 10, $imageX-10, $imageY-10, $transparent);
//imagealphablending($img, true);
imagerectangle($img, 50, 50, 150, 150, $white);
header("Content-Type: image/png");
imagepng($img);
//imagepng($img,'anand.png');

Answer №1

For more information on how to use transparency in images, you can check out imagecolorallocatealpha. The documentation states:

imagecolorallocatealpha() works the same way as imagecolorallocate() but includes an additional parameter for setting transparency.

To add transparency to your colors, simply change imagecolorallocate to imagecolorallocatealpha and include an opacity value from 0 to 127 (with 0 being fully opaque and 127 being completely transparent) as the last parameter.

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