imagelayereffect
(PHP 4 >= 4.3.0, PHP 5)
imagelayereffect — Set the alpha blending flag to use the bundled libgd layering effects
Descripción
bool imagelayereffect
( resource $image
, int $effect
)
Set the alpha blending flag to use the bundled libgd layering effects.
Lista de parámetros
-
image
-
An image resource, returned by one of the image creation functions,
such as imagecreatetruecolor().
-
effect
-
One of the following constants:
-
IMG_EFFECT_REPLACE
-
Use pixel replacement (equivalent of passing TRUE to
imagealphablending())
-
IMG_EFFECT_ALPHABLEND
-
Use normal pixel blending (equivalent of passing FALSE to
imagealphablending())
-
IMG_EFFECT_NORMAL
-
Same as IMG_EFFECT_ALPHABLEND.
-
IMG_EFFECT_OVERLAY
-
Overlay has the effect that black background pixels will remain
black, white background pixels will remain white, but grey
background pixels will take the colour of the foreground pixel.
Valores retornados
Devuelve TRUE si todo se
llevó a cabo correctamente, FALSE en caso
de fallo.
Notes
Note: Esta funcion esta disponible
solamente si PHP se ha compilado con la version de las bibliotecas GD
distribuidas con PHP.
Note: Esta funcion requiere GD 2.0.1 o
posterior.