什么是PHP“加密”功能？

Question

Looking for built in encryption functions, not to hide the string from the clever programmer, but instead just to obfuscate it a bit. Looking for functions such as str_rot13 and base64_encode, but I can't seem to locate any. Surely there are more?

Answer 1

For real encryption, mcrypt is the solution. For obfuscation, a third function is uuencode; here's some code for decoding; encoding involves reversing the order.

$text = str_rot13($text);
$text = base64_decode($text);
$text = convert_uudecode($text);

Note that both base64_encode and convert_uudecode increase the size of the data.