[php] ImageColorTransparent mit PNG?

[Chris]

>  Kennt PNG im Gegensatz zu gif
> keine Transparenz oder ist ein Fehler im Programm?

PNG kennt Transparenzen aber vielleicht dein Browser nicht.

"Unlike GIF, PNG supports:
Grayscale images up to 16-bits, and true-color up to 48-bits
(not justcolor-mapped [palette] images)
-    Up to 65,536 levels of transparency/translucency
  -  Automatic "brightness" compensation across platforms
   - Two-dimensional interlacing, which provides an initial impression
of the
      image after just 1/64 of the data has arrived.
Plus it's free of patents and has better compression. "

http://webreview.com/pub/97/05/09/feature/index.html