dogrulama.php

<?php

$beyaz = ImageColorAllocate($image, 255, 255, 255);
$siyah = ImageColorAllocate($image, 0, 0, 0);
$cizgiRengi = ImageColorAllocate($image, rand(0, 255), rand(0, 255), rand(0, 255));

$cember1 = imagecolorallocatealpha($image, 0, 220, 100, 75); 
$cember2    = imagecolorallocatealpha($image, 20, 200, 200, 75);
$cember3   = imagecolorallocatealpha($image, 250, 100, 250, 0);

imagefilledellipse($image, 17, 12, 21, 23, $cember1); 
imagefilledellipse($image, 34, 12, 21, 23, $cember2);
imagefilledellipse($image, 53, 12, 20, 23, $cember3);