php man page for str_rot13

STR_ROT13(3)								 1							      STR_ROT13(3)

str_rot13 - Perform the rot13 transform on a string

SYNOPSIS
       string str_rot13 (string  $str)

DESCRIPTION
	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
	      o $str
		- The input string.

RETURN VALUES
	Returns the ROT13 version of the given string.

EXAMPLES
       Example #1

	      str_rot13(3) example

	      <?php

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

	      ?>

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