(PHP 4 >= 4.3.0, PHP 5)
imagelayereffect — Set the alpha blending flag to use the bundled libgd layering effects
Set the alpha blending flag to use the bundled libgd layering effects.
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
One of the following constants:
Returns TRUE on success or FALSE on failure.
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).