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PHP | str_rot13() Function

PHP str_rot13() Function

Hello folks! welcome back to a new edition of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP str_rot13() Function.

The PHP str_rot13() function performs the rot13 transform on a string.

This function encode shifts every letter 13 places in the alphabet while numerical and non-alphabetic characters are untouched.

Tip: Encoding and decoding are performed by the same function, passing an encoded string as an argument returns the original version.


Following below is the syntax to use this function -

string str_rot13 ( string $str )

Parameter Details

Sr.NoParameters & Description


It contains the information about input string

Return Value

This function returns the ROT13 version of the given string.


Try out the example below -

   echo str_rot13('PHP 8'); 


When the above code is executed, it will produce the following result -


Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we will be studying about the PHP str_shuffle() Function.

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