사이트내에서요청시	외부에서요청시

외부에서 요청시(불펌등) 워터마크를 찍어 내보냅니다

.htaccess
RewriteCond %{REQUEST_FILENAME} .*jpg$|.*gif$|.*png$ [NC]
RewriteCond %{HTTP_REFERER} !domain\. [NC]
RewriteRule ^([^thumb].*\.[jJ].*)$ http://domain.com/watermark.php?src=$1 [L]

wartermark.php
<?php
$input .= "./";
if (isset($_GET['src'])) { $input .= $_GET['src']; }
$watermark = "./images/water.png";
$image = $input;
$im = imagecreatefrompng($watermark);
$ext = substr($image, -3);
if (strtolower($ext) == "gif") {
if (!$im2 = imagecreatefromgif($image)) {
echo "Error opening $image!"; exit;
}
} else if(strtolower($ext) == "jpg") {
if (!$im2 = imagecreatefromjpeg($image)) {
echo "Error opening $image!"; exit;
}
} else if(strtolower($ext) == "png") {
if (!$im2 = imagecreatefrompng($image)) {
echo "Error opening $image!"; exit;
}
} else {
die;
}
imagefilledrectangle($im2, 0  , (imagesy($im2))-(imagesy($im)) , imagesx($im2)  , imagesy($im2) , imagecolorallocatealpha($im2, 0, 0, 0, 100) );
imagecopy($im2, $im, (imagesx($im2)-(imagesx($im))), (imagesy($im2))-(imagesy($im)), 0, 0, imagesx($im), imagesy($im));
$last_modified = gmdate('D, d M Y H:i:s T', filemtime ($image));
header("Last-Modified: $last_modified");
header("Content-Type: image/png");
imagepng($im2);
imagedestroy($im);
imagedestroy($im2);
?>

끝으로
$watermark = "./images/water.png"; 여기나온 경로대로 이미지를 만들어주시면됩니다