best way to remove "==" from random characters

Question

Why base64 ends with == ? Sometimes it ends with == in random characters.

I want to know how to remove those == or = from random characters. Which is the best and right way to remove these = from random characters?

Is this the best way to remove these == ?

str_replace("=","",$url)

This question doesn't show much research effort. Both Google and the Stack Overflow search gave that duplicate as a first result when searching for your exact question title. — GolezTrol, Nov 03 '15 at 08:07
@GolezTrol I want to know the best way to remove these = from random characters? — Karuppiah RK, Nov 03 '15 at 08:09
The question you orgininally asked has been asked before and already has an answer. If your question turns out to be different, please ask a new question, since it's hard to get enough votes to reopen your question. — GolezTrol, Nov 03 '15 at 08:16

score 2 · Answer 1 · answered Nov 03 '15 at 08:07

from Wikipedia

An additional pad character is allocated which may be used to force the encoded output into an integer multiple of 4 characters (or equivalently when the unencoded binary text is not a multiple of 3 bytes) ; these padding characters must then be discarded when decoding but still allow the calculation of the effective length of the unencoded text, when its input binary length would not be a multiple of 3 bytes (the last non-pad character is normally encoded so that the last 6-bit block it represents will be zero-padded on its least significant bits, at most two pad characters may occur at the end of the encoded stream).

best way to remove "==" from random characters

1 Answers1