Description
string base64_encode(string data);
Base64_encode() returns
data encoded with base64. This encoding
is designed to make binary data survive transport through
transport layers that are not 8-bit clean, such as mail bodies.
Base64-encoded data takes about 33% more space than the original
data.
See also:
base64_decode(),
chunk_split(),
RFC-2045 section 6.8.
