Question

54

Encode Base64 in JavaScript, send with GET, decode in PHP

rated 0 times [ 60] [ 6] / answers: 1 / hits: 21943 / 7 Years ago, fri, february 10, 2017, 12:00:00

I thought this will be an easy Google-search, but it seems that my technique is not as common as I thought.

How can I encode a Base64 string in JavaScript, in order to put it safely on the line with a GET parameter (my Base64 string contains a lot of /, + and =, and decode the exact same string in PHP, in order to store it in a database?

When I post the Base64 string without encoding, my PHP script does not accept it.

I found a solution for encoding and decoding the Base64 string in JavaScript, but not in the way it makes sense for me.

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2 Years ago

answered 7 Years ago parker · Accepted Answer

So in javascript (updated with encoding URI):

var myStr = I am the string to encode;

var token = encodeURIComponent(window.btoa(myStr));

btoa example

You should be then able to add that base64 encoded string to your get request.

Then in PHP, after you retrieve the request:

<?php

   $str = 'VGhpcyBpcyBhbiBlbmNvZGVkIHN0cmluZw==';

   echo base64_decode(urldecode($str));

?>

base64_decode docs