imagelayereffect
(PHP 4 >= 4.3.0, PHP 5)
imagelayereffect — Set the alpha blending flag to use the bundled libgd layering effects
Description
bool imagelayereffect
( resource $image
, int $effect
)
Set the alpha blending flag to use the bundled libgd layering effects.
Parameters
- 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.
Return values
Palauttaa TRUE onnistuessaan, muutoin FALSE.
Notes
Note: This function is only available if PHP is compiled with the bundled version of the GD library.
Note: This function requires GD 2.0.1 or later (2.0.28 or later is recommended).