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.