note that using base64 or uuencode to store data in a database is pretty useless. if you properly escape your data and use a binary field (BLOB etc) there is no problem.
(PHP 5, PHP 7, PHP 8)
convert_uuencode — 使用 uuencode 编码一个字符串
$data
) : stringconvert_uuencode() 使用 uuencode 算法对一个字符串进行编码。
uuencode 算法会将所有（含二进制数据）字符串转化为可输出的字符， 并且可以被安全的应用于网络传输。使用 uuencode 编码后的数据 将会比源数据大35%左右
data需要被编码的数据。
返回 uuencode 编码后的数据 或者在失败时返回 false。
Example #1 convert_uuencode() 例子
<?php
$some_string = "test\ntext text\r\n";
echo convert_uuencode($some_string);
?>
note that using base64 or uuencode to store data in a database is pretty useless. if you properly escape your data and use a binary field (BLOB etc) there is no problem.
@Craig's note: base64_encode() is better suited for that. In fact, it produces smaller output and operates slightly faster. I did a little benchmark -- here are my findings:
File: JPG, 631614 bytes
== Base64 ==
execution time: 0.0039639472961426 secs
output length: 842152
== UUencode ==
execution time: 0.004105806350708 secs
output length: 870226