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# base64_encode

(PHP 3, PHP 4 )

base64_encode -- Encodes data with MIME base64

## 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.

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