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str_rot13

Perform the rot13 transform on a string (PHP 4 >= 4.2.0, PHP 5)
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 2447. str_rot13() example

<?php

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

?>


ChangeLog

VersionDescription
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.