is there a way to rename files during the upload progress within the Wordpress 3.0 backend? I would like to have a consistent naming of files, especially for images.
I think an 12 (+-) digit hash value of the original filename or something similar would be awesome. Any suggestions?
Regards
But it would really be easier to do that before uploading files.
Not quite sure about that - this seems fairly easy;
/**
* @link http://stackoverflow.com/a/3261107/247223
*/
function so_3261107_hash_filename( $filename ) {
$info = pathinfo( $filename );
$ext = empty( $info['extension'] ) ? '' : '.' . $info['extension'];
$name = basename( $filename, $ext );
return md5( $name ) . $ext;
}
add_filter( 'sanitize_file_name', 'so_3261107_hash_filename', 10 );
This filter creates a 32 character hash of the original filename, preserving the file extension. You could chop it down a little using substr() if you wanted to.
This filter runs once the file has been uploaded to a temporary directory on your server, but before it is resized (if applicable) and saved to your uploads folder.
Note that there is no risk of file overwrite - in the event that a newly hashed file is the same as one that already exists, WordPress will try appending an incrementing digit to the filename until there is no longer a collision.
<?php
/**
* Plugin Name: Hash Upload Filename
* Plugin URI: http://stackoverflow.com/questions/3259696
* Description: Rename uploaded files as the hash of their original.
* Version: 0.1
*/
/**
* Filter {@see sanitize_file_name()} and return an MD5 hash.
*
* @param string $filename
* @return string
*/
function so_3261107_hash_filename( $filename ) {
$info = pathinfo( $filename );
$ext = empty( $info['extension'] ) ? '' : '.' . $info['extension'];
$name = basename( $filename, $ext );
return md5( $name ) . $ext;
}
add_filter( 'sanitize_file_name', 'so_3261107_hash_filename', 10 );