Description:
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In my php.ini file,
i enabled GD only.

ie) uncomment that one line for gd configuration


Reproduce code:
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$logoImage is png image.
        $image1 = ImageCreateFromPNG($logoImage);
        $color=imagecolorat($image1,$mouseX,$mouseY);
        imagecolortransparent($image1,$color);
         ImagePNG($image1,"$logoImage");

after transparant a color in image. save that image .

what the problem is,
  after that i transparent another color in that image ,last color is only
tranperant. previous color revoke it's original place.

for example :
     imagecolortransparent($image1,$color);
     imagecolortransparent($image1,$color1);
     imagecolortransparent($image1,$color2);
     imagecolortransparent($image1,$color3);


Expected result:
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after excution only that image transperant for $color3
but i want a transparent image with all four color.
what can i do?
any other functions..


Actual result:
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only image with last color transparancy.