GoLang str_rot13

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PHP str_rot13

PHP original manual for str_rot13 [ show | php.net ]


(PHP 4 >= 4.2.0, PHP 5, PHP 7)

str_rot13Perform the rot13 transform on a string


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.



The input string.

Return Values

Returns the ROT13 version of the given string.


Example #1 str_rot13() example


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