I´ve got this error:
Warning: imagettftext() [function.imagettftext]: Invalid font filename in C:\Apache\htdocs\Chapter7\modifyimage.php on line 47
My code is:
if ($text == 'on') {
   imagettftext($image, 12, 0, 20, 20, 0, "CALIBRI.TTF", $image_caption);
}
This font is installed at the default system folder, C:\windows\Fonts

Is it a PHP problem?

Thanks in advance :)

Education is what remains after one has forgotten everything he learned in school.

I loaded font file in my webpage directory. Try making a copy and putting in your Chapter7 subdirectory and see if that works.

I wasn't getting an error whenever I called the imagettftext function. Instead, the text I wanted superimposed on the picture just wouldn't appear until I copied a font file from c:/windows/fonts to the directory with modifyimage.php like Karlos199.

If you take a look at the manual page on the imagettftext function, it tells you how to change where PHP/GD will look for fonts.