imagelayereffect
(PHP 4 >= 4.3.0, PHP 5)
imagelayereffect — Set the alpha blending flag to use the bundled libgd layering effects
Popis
bool imagelayereffect
( resource $image
, int $effect
)
Set the alpha blending flag to use the bundled libgd layering effects.
Parametre
-
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.
Vrátené hodnoty
Vracia TRUE pri úspechu alebe FALSE pri chybe.
Poznámky
Note: Táto funkcia je dostupná len ak
bolo PHP kompilované s pribalenou verziou GD knižnice.
Note: Táto funkcia vyžaduje GD 2.0.1
alebo novší.