Base64 Max Accepted Length?

Hey Guys,

What is the max length string I can send in a $_POST API Call?

I have a Base64 string (Image Data) I am trying to send / do some conversions from Base64 >> Image and save the file.

My problem is that only half of the image is displaying and by looking at the Returned value, the Base64 is getting cut in half (losing a bunch of characters after).

I believe the POST may have a limit (or string) and am trying to figure out how to increase this or a work around.

Thanks!