str_rot13

Performs the ROT13 transformation on a string and returns the resulting string.
Example: «string» → «fgevat».

str_rot13 – Text Encryption Using Character Rotation

Produces results similar to the PHP function str_rot13()

str_rot13 is an encryption algorithm that replaces each letter with the 13th letter in the alphabet. This method is widely used for simple text encoding without complex cryptographic operations.

Advantages of Using str_rot13

Fast encoding – does not require additional keys.
Instant decoding – applying str_rot13 again restores the original text.
Information concealment – helps hide content from automated analysis and search engines.
Development applications – used to protect email addresses, spoilers, and textual data.

Example of str_rot13

Original text: Hello, World!

Encoded text: Uryyb, Jbeyq!

Applying str_rot13 again restores the original text.

This method is simple to use and convenient for hiding text without altering its structure.

Use str_rot13 for secure encoding and data protection against automated analysis.