(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
str_rot13 — Perform the rot13 transform on a string
$string): string
Performs the ROT13 encoding on the string 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.
stringThe input string.
Returns the ROT13 version of the given string.
Example #1 str_rot13() example
<?php
echo str_rot13('PHP 4.3.0'); // CUC 4.3.0
?>