PhpRiot
Become Zend Certified

Prepare for the ZCE exam using our quizzes (web or iPad/iPhone). More info...


When you're ready get 7.5% off your exam voucher using voucher CJQNOV23 at the Zend Store

str_rot13

(PHP 4 >= 4.2.0, PHP 5)

str_rot13Perform 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.

Parameters

str

The input string.

Return Values

Returns the ROT13 version of the given string.

Examples

Example #1 str_rot13() example

<?php

echo str_rot13('PHP 4.3.0'); // CUC 4.3.0

?>

Changelog

Version Description
4.3.0 The behaviour of this function was fixed. Before this fix, the str was also modified, as if it was passed by reference.

PHP Manual