PHP str_rot13() Function
Example
Encode and decode the string:
<?php
echo str_rot13("I love Shanghai");
echo "<br>";
echo str_rot13("V ybir Funatunv");
?>
Definition and Usage
The str_rot13() function performs ROT13 encoding on the string.
ROT13 encoding moves each letter in the alphabet forward by 13 letters. Numbers and non-alphabetic characters remain unchanged.
Tip:Encoding and decoding are both done by the same function. If you pass the encoded string as an argument, the original string will be returned.
Syntax
str_rot13(string)
| Parameters | Description |
|---|---|
| string | Required. Specifies the string to be encoded. |
Technical Details
| Return Value: | Returns the ROT13 version of the encoded string. |
| PHP Version: | 4.2.0+ |
| Update Log: | Before PHP 4.3,string Can also be modified, just like by reference passing. |
