note 47725 added to function.str-rot13
| From: | joh at n dot liesen dot se | Date: | Fri, 26 Nov 2004 16:35:54 +0000 |
| Subject: | note 47725 added to function.str-rot13 | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-81067@lists.php.net to get a copy of this message | ||
It's also possible to rot13 a string without using a lookup table.
<?php
function rot13($s)
{
$rot13 = "";
for ($i = 0; $i < strlen($s); ++$i)
{
$char = ord($s{$i});
$cap = $char & 32;
$char &= ~$cap;
$char = (($char >= ord('A')) && ($char <= ord('z'))) ?
(($char - ord('A') + 13) % 26 + ord('A')) : $char;
$char |= $cap;
$rot13 .= chr($char);
}
return $rot13;
}
?>
----
Manual Page -- http://www.php.net/manual/en/function.str-rot13.php
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