Which hashing algorithm is best to check file duplicity?
| From: | Martin Zvarík | Date: | Sun, 15 Mar 2009 21:25:11 +0000 |
| Subject: | Which hashing algorithm is best to check file duplicity? | ||
| Groups: | php.general | ||
| Request: | Send a blank email to php-general+get-290099@lists.php.net to get a copy of this message | ||
I want to store the file's hash to the database, so I can check next time to see if that file was already uploaded (even if it was renamed).
What would be the best (= fastest + small chance of collision) algorithm in this case?
Is crc32 a good choice?
Thank you in advance,
Martin