Encoding an array for url in PHP

Question

I have been working on some QR codes, I need to pass an array to the QR with the data but it needs encoding. The data itself is a json_array which is used to generate a PDF.

If I use base64 encoding the QR code is stupidly large, and when using ascii85 it breaks the QR.

Can you let me know of any encoding praticies which would work in the url, the shorted the coding the betetr. qr_generator.php?data={encoded_json_array}

Answer 1

You can try this:

urlencode($string);

It encodes a string to be appended as an url parameter. So if you have an array, try:

urlencode(json_encode($array);