Description:
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From the imagettftext documentation:

  .. This example script will produce a black GIF 400x30 pixels..

  header("Content-type: image/jpeg");
  $im = imagecreate(400,30);
  $white = imagecolorallocate($im, 255,255,255);
  $black = imagecolorallocate($im, 0,0,0);
  
  // Replace path by your own font path
  imagettftext($im, 20, 0, 10, 20, $black, "/path/arial.ttf",
  "Testing... Omega: Ω");
  imagejpeg($im);
  imagedestroy($im);

Expected result:
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I guess it should say: "This example script will produce a black JPEG image 400x30 pixels.."

Thanks