change transparent image color dynamically

Question

i have to change image color dynamically using php i used the following code

$imgname = "source.png";
$im = imagecreatefrompng ($imgname);
if($im && imagefilter($im, IMG_FILTER_COLORIZE, 27, 133, 85))
{
    echo 'Image successfully shaded as per color.';

    imagepng($im, 'Result.png');
    imagedestroy($im);
}
else
{
    echo 'Image create succesfully.';
}

but when i used it with transparent image it show me large thing border

can we resolve using the GD Lib or image stick any function ???

Answer 1

if you are talking about quality issue or shadow issue then I can be resolve by using imagesavealpha function before applying filter.

code should be

<?php
$imgname = "source.png";
$im = imagecreatefrompng ($imgname);
imagesavealpha($im, true);  
if($im && imagefilter($im, IMG_FILTER_COLORIZE, 27, 133, 85))
{
    echo 'Image successfully shaded as per color.';

    imagepng($im, 'Result.png');
    imagedestroy($im);
}
else
{
    echo 'Image create succesfully.';
}
?>