Question

Here we have a scenario to encode file name and want to decode it while retrieving.
if i encode it with md5 i cant decode it because it is one way hashing and if i encode it with ‘base64_encode’ then if two files with same name will cause conflict to my data while retrieving.

So i want to know if there in any unique encoding function in PHP to encode and later to decode.

Thanks in advance!!!!

Answer 1

You could use base64_encode and prepend a unique identifier like this:

$encoded = base64_encode(uniqid().$filename); //$filename is your filename

And decode it like this:

$decoded = base64_decode($encoded);
$filename = substr($decoded, 13);

This would basically give you an encoded string for the filename that’s unique and can be reversed to the filename.