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.