Convert a binary number to Base 64

Question

I know this is a pretty silly question, but I don\'t know what to do.

I have an arbitrary binary number, say,

100100000011001000000010010000001000001         


        

Answer 1

$number = 1001000000110010000000100100000010000011000000010001000001011000110000110000011100011100000011000000010010011000100000000000000100100000010110001100001000000111;
echo base64_encode ($number);

This is if you want the exact string be converted into Base 64.