scritto cosi`:

<?php
/*header("Content-type: image/png");*/
$im = @imagecreate(110, 20)
or die("Cannot Initialize new GD image stream");
$background_color = imagecolorallocate($im, 0, 0, 0);
$text_color = imagecolorallocate($im, 233, 14, 91);
imagestring($im, 1, 5, 5, "A Simple Text String", $text_color);
imagepng($im);
imagedestroy($im);
?>

mi da questo risultato:

‰PNG  ��� IHDR���n������V,š���PLTE���é[an÷���fIDATxœc` `fxÄÀÃ`Ç ÀçÀä²41ƒ‚€˜Ë–Ý’Àq²@੤;{á0— œi