imagesavealpha

(no version information, might be only in CVS)

imagesavealpha -- Set the flag to save full alpha channel information (as opposed to single-color transparency) when saving PNG images.

Description

bool imagesavealpha ( resource image, bool saveflag)

imagesavealpha() sets the flat to attempt to save full alpha channel information (as opposed to single-color transparency) when saving PNG images.

You have to unset alphablending (imagealphaplending()($im, FALSE)) to use it.

Alpha channel is not supported by all browsers, if you have problem with your browser, try to load your script with a alpha channel compliant browser, e.g. latest Mozilla.

See also imagealphablending().