(PHP 4 >= 4.3.2, PHP 5)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 flag to attempt to save

full alpha channel information (as opposed to single-color transparency)

when saving PNG images.

You have to unset alphablending

(imagealphablending($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 an alpha channel compliant

browser, e.g. latest Mozilla.

Замечание: Эта функция нуждается в GD версии 2.0.1 или выше.