PHP Provides str_rot13 function to rotate alphabetic characters by 13 places. However, there is no str_rot47 function to rotate 47 places over a larger mapping table. The following is a quick rot47 function add-on you can easily use in your PHP application. The quick implementation is possible by using PHP strstr function that practically-fast maps a set of characters to another set.
This previous post talks about rotating functions implementation in batch.
1 2 3 4 5 6 7 8 9 | if (!function_exists('str_rot47')) { function str_rot47($str) { return strtr($str, '!"#$%&\'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~', 'PQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~!"#$%&\'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNO' ); } } |
if (!function_exists('str_rot47')) {
function str_rot47($str) {
return strtr($str,
'!"#$%&\'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~',
'PQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~!"#$%&\'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNO'
);
}
}You could refer to this site for more rot47 implementations. You could also write a function to invoke the API like this:
1 2 3 4 | function remote_str_rot47($str) { $data = file_get_contents("https://helloacm.com/api/rot47/?s=$str"); return json_decode($data, true); } |
function remote_str_rot47($str) {
$data = file_get_contents("https://helloacm.com/api/rot47/?s=$str");
return json_decode($data, true);
}ROT47 Online Encoder & Decoder
- Online (Client-side) Javascript ROT47 Encoder & Decoder
- Online (Server-side) PHP ROT47 Encoder & Decoder
–EOF (The Ultimate Computing & Technology Blog) —
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