Last updated: Sat, 24 Mar 2007

imagesavealpha

(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

Popis

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.

Seznam parametrů

image: An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
saveflag

Návratové hodnoty

Vrací TRUE při úspěchu, FALSE při selhání.

Poznámky

Poznámka: Tato funkce vyžaduje GD 2.0.1 nebo novější (doporučena verze 2.0.28 nebo novější).

Viz také

imagealphablending()

add a note User Contributed Notes
imagesavealpha

doggz at mindless dot com
05-Oct-2003 09:50


To use PNG-24 in IE 5.5+ try:

<img alt="Transparant PNG" src="myimage.gif" style="width: 200px; height: 200px; filter:progid:

DXImageTransform.Microsoft.AlphaImageLoader(src='myimage.png', sizingMethod='scale')" />



there is more info available at http://people.brandeis.edu/~peelle/png/

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imagesetbrush

imagerotate

Last updated: Sat, 24 Mar 2007