imagettftext 한글 처리

<?php
header('Content-Type: image/png');

// Create the image
$im = imagecreatetruecolor(400, 30);

// Create some colors
$white = imagecolorallocate($im, 255, 255, 255);
$grey = imagecolorallocate($im, 128, 128, 128);
$black = imagecolorallocate($im, 0, 0, 0);
imagefilledrectangle($im, 0, 0, 399, 29, $white);

// The text to draw
$text ="한글은 유니코드로 변경하여 처리하면 된다. ";
$text = iconv("EUC-KR","UTF-8",$text);
// Replace path by your own font path
$font = $DOCUMENT_ROOT.'/font/NanumBarunGothicBold.ttf';

// Add some shadow to the text
imagettftext($im, 20, 0, 11, 21, $black, $font, $text);

// Add the text
//imagettftext($im, 20, 0, 10, 20, $grey, $font, $text);

// Using imagepng() results in clearer text compared with imagejpeg()
imagepng($im);
imagedestroy($im);

?>