imagecolorexactalpha
(PHP 4 >= 4.0.6, PHP 5)
imagecolorexactalpha -- Get the index of the specified color + alpha
Description
int
imagecolorexactalpha ( resource image, int red, int green, int blue, int alpha )
Returns the index of the specified color+alpha in the palette of the
image.
Parameters
imageAn image resource, returned by one of the image creation functions,
such as imagecreatetruecolor().
red
Value of red component
green
Value of green component
blue
Value of blue component
alpha
A value between 0 and 127.
0 indicates completely opaque while
127 indicates completely transparent.
The colors parameters are integers between 0 and 255 or hexadecimals
between 0x00 and 0xFF.
Return Values
Returns the index of the specified color+alpha in the palette of the
image, or -1 if the color does not exist in the image's palette.
Notes
Note: This function requires GD 2.0.1 or later (2.0.28 or later is recommended).