PHP str_rot13() Function
Encode and decode a string:
echo str_rot13("Hello World");
echo str_rot13("Uryyb Jbeyq");
Run example »
Definition and Usage
The str_rot13() function performs the ROT13 encoding on a string.
The ROT13 encoding shifts every letter 13 places in the alphabet. Numeric and non-alphabetical characters remains untouched.
Tip: Encoding and decoding are done by the same function. If you pass an encoded string as argument, the original string will be returned.
|string||Required. Specifies the string to encode|
|Return Value:||Returns the ROT13 version of the encoded string|
|Changelog:||Before PHP 4.3, the string was also modified, as if it was passed by reference|
PHP String Reference
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