<?php $code = rand(1000,9999); $_SESSION["code"] = $code; $im = imagecreatetruecolor(50, 30); imagesavealpha($im, true); $bg = imagecolorallocatealpha($im, 0, 0, 0, 127); //background color blue $fg = imagecolorallocate($im, 0, 0, 0);//text color white imagefill($im, 0, 0, $bg); imagestring($im, 8, 8, 8, $code, $fg); header("Cache-Control: no-cache, must-revalidate"); header('Content-type: image/png'); imagepng($im); imagedestroy($im); ?>
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