t0k4rt/phpqrcode — pull request #22 by pcr-coding (2014-09-16 09:42:05+00:00)
Title: add transparency mode for png images

This feature includes transparency mode for png files. As default transparency mode is set to false.

```php
QRcode::png(
$text,
$outfile = false,
$level = QR_ECLEVEL_L,
$size = 3,
$margin = 4,
$saveandprint = false,
$back_color = 0xFFFFFF,
$fore_color = 0x000000,
$back_transparent = false
)
```

Demo page `index.php` is updated to test and show transparency.