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

Descripción

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.

Lista de parámetros

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

Valores retornados

Devuelve TRUE si todo se llevó a cabo correctamente, FALSE en caso de fallo.

Notes

Note: Esta funcion requiere GD 2.0.1 o posterior.

Ver también

imagealphablending()