dogrulama.php

<?php
session_start();

$sifreli = crypt(rand(0, 9999));  
$dogrulamaKodu = strtoupper(substr($sifreli, 5, 6));
$_SESSION["dogrulamaKodu"] = $dogrulamaKodu;

$en =70;
$boy = 25;
$image = ImageCreate($en, $boy);

$beyaz = ImageColorAllocate($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);

ImageFill($image, 0, 0, $beyaz);
ImageString($image, 7, 9, 5, $_SESSION["dogrulamaKodu"], $siyah);

imageline($image, 33, 2, 70, 200, $cizgiRengi);
imageline($image, 0, 100, 25, 0, $cizgiRengi);
imageline($image, 70, 25, rand(35, 45), 0, $cizgiRengi);
imageline($image, 0, 8, 70, 23, $cizgiRengi);


("Content-Type: image/jpegs");
ImageJpeg($image);
ImageDestroy($image);
exit();
?>