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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.


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