PHP str_rot13() Function

In this chapter you will learn:

1. Definition for PHP str_rot13() Function
2. Syntax for PHP str_rot13() Function
3. Parameter for PHP str_rot13() Function
4. Return for PHP str_rot13() Function
5. Note for PHP str_rot13() Function
6. Example - Encode and decode a string

Definition

The str_rot13() function performs the ROT13 encoding on a string.

Syntax

PHP str_rot13() Function has the following syntax.

Parameter

Return

PHP str_rot13() Function returns the ROT13 version of the encoded string

Note

The ROT13 encoding shifts every letter 13 places in the alphabet. Numeric and non-alphabetical characters remains untouched.

Encoding and decoding are done by the same str_rot13() function. If you pass an encoded string, the original string is returned.

Example

Encode and decode a string:

/*from  ja va2  s  .  c o m*/
<?php
echo str_rot13("java2s.com");
echo "\n";
echo str_rot13("Uryyb Jbeyq");
?>

The code above generates the following result.

Next chapter...

What you will learn in the next chapter:

1. Definition for PHP str_shuffle() Function
2. Syntax for PHP str_shuffle() Function
3. Parameter for PHP str_shuffle() Function
4. Return for PHP str_shuffle() Function
5. Example - Randomly shuffle all characters of a string

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