str_rot13
(PHP 4 >= 4.2.0, PHP 5)
str_rot13 — Perform the rot13 transform on a string
说明
string str_rot13
( string $str
)
Performs the ROT13 encoding on the str argument and returns the resulting string.
The ROT13 encoding simply shifts every letter by 13 places in the alphabet while leaving non-alpha characters untouched. Encoding and decoding are done by the same function, passing an encoded string as argument will return the original version.
参数
- str
-
The input string.
返回值
Returns the ROT13 version of the given string.
范例
Example#1 str_rot13() example
<?php
echo str_rot13('PHP 4.3.0'); // CUC 4.3.0
?>
更新日志
| 版本 | 说明 |
|---|---|
| 4.3.0 | The behaviour of this function was fixed. Before this fix, the str was also modified, as if it was passed by reference. |
