Bu benim kodudur.

<?php
function generate_card($card_number='',$card_price='',$card_expire='',$image_path='',$font_path)
{
    // store image on variable //
    $image = imagecreatefrompng($image_path);

    // some text color
    $color = imagecolorallocate($image, 255, 255, 0);

    // print card price //
    imagettftext($image, 15, 0, 200, 40, $color, $font_path, $card_price);
    // print card number //
    imagettftext($image, 15, 0, 15, 85, $color, $font_path, $card_number);
    // print expiry date //
    imagettftext($image, 12, 0, 145, 155, $color, $font_path, $card_expire);

    header('Content-type:image/png');
    imagepng($image);
    imagedestroy($image); 
}
generate_card('1234 5678 9101 1121','$200','12/13','card.png','verdana.ttf');
?>

I am generating visa gift cards, image also created and displayed on the page. But my problem is when i want to save this image in Mozilla it gives the "page_name.png" and in IE it gives me "Untitled". How can i give my own name like "visa_gift_01.png" while saving.