php压缩图片时,原本透明背景的图片最后都变成黑色,解决... $target_image = imagecreatetruecolor("水印宽度", "水印高度"); //2.上色 $color=imagecolorallocate($target_image,229,231,230); //3.设置透明 imag
php压缩图片时,原本透明背景的图片最后都变成黑色,解决... $target_image = imagecreatetruecolor("水印宽度", "水印高度"); //2.上色 $color=imagecolorallocate($target_image,229,231,230); //3.设置透明 imag