str_rot13
str_rot13
(PHP 4 >= 4.2.0, PHP 5, PHP 7)
str_rot13 — Perform the rot13 transform on a string
Description
string str_rot13 ( string $str )
Performs the ROT13 encoding on the str argument and returns the resulting string.
The ROT13 encoding simply shifts every letter by 13 places in the alphabet while leaving non-alpha characters untouched. Encoding and decoding are done by the same function, passing an encoded string as argument will return the original version.