用gd制作混合图像

Question

im trying to make a form with php and gd library. form contains a png logo with transparent packgroung. now i have 3 problems:

1. when i make a border then i want to place the logo in top corner of image, its not transparented background anymore

2. im using persian font and using imagettftext function. it show the characters but in persian we have merged words but it show characters seperated

3. how can i draw rounded corner borders

here is my code:

$fontSize=4;
$width = imagefontwidth($font) * strlen($string)+10 ;
$height = imagefontheight($font) ;


$handle = ImageCreate (800, 400) or die ("Cannot Create image");
$logo = imagecreatefrompng( 'Logo.png' );

$bg_color = ImageColorAllocate ($handle, 255, 240, 250);
$txt_color = ImageColorAllocate ($handle, 0, 0, 0);

$title="فرم قرارداد";
$font = "IRANSans.ttf";
$title_size = 18;
imagettftext( $handle, $title_size, 0, 620, 100, $txt_color, $font, $title );

$black = imagecolorallocate($handle, 0, 0, 0);
imagerectangle($handle, 20, 20, 780, 380, $black);
imagecopy($handle, $logo, 10, 10, 0, 0, 161, 160);

  header('Content-Type: image/png');
    imagepng($handle);

Answer 1

1. See this answer: php GD create a transparent png image
2. You'll have to use an OpenType (.otf) font, if you want to make use of your language's typographic characteristics.
3. You might want to take a look at GD's imagearc.