Base 64 Encoding¶
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It is often used to encode data so it can be safely transmitted over text-based systems such as email, URLs, or JSON, which may not handle binary data well.
Base64 is used to prevent degradation of the message during the transmission: the data is not corrupted by the journey on Internet.
Base64 is not encryption. It does not secure the data: there is no protection against reading by a third party, unless they are not aware of Base64 itself.
Base64 is not related to the notion of base, in math (such as base 10, binary, octal or hexadecimal).
<?php
$phpString = 'Well, I can say: 你好！' ;
$encoded = base64_encode($phpString);
print $encoded.PHP_EOL;
$decoded = base64_decode($encoded);
print $decoded.PHP_EOL;
?>
See also https://inspector.dev/php-base64-encodedecode-best-practices-and-use-cases/
Related : UUencode Encoding
