Question

I am trying to do a regex match and replace for hotfile.com links to mp3 files i have in my database (WordPress).

I used to use hotfile for streaming mp3 files on my site, now i switched to a CDN, could someone kindly help me out with this:

Replace: http//hotfile.com/dl/157490069/c8732d4/mp3_file_name.mp3
With: http//p.music.cdndomain.com/vod/music.folder/2010/mp3_file_name.mp3

I have been trying a simple Search and Replace like this: http//hotfile.com/dl/%/%/, but its not working.

It would have been easier to perform a search and replace if hotfile.com didn’t have different folders for all files, below is 2 examples of the problem:

http//hotfile.com/dl/155490069/c7932d4/
http//hotfile.com/dl/165490070/c8745e7/

I have over 500 files to replace.

Thanks

Answer 1

Since you must be using mysql for your wordpress database, you can do this replacement either by regex as you asked:

Regex pattern : #http://(www.)?hotfile.com/\w+/\w+/\w+/#

Replacement pattern: http//p.music.cdndomain.com/vod/music.folder/2010/

An alternate simpler solution would be to extract the mp3 file name using simple string functions of mysql e.g.

1. Use SUBSTRING or SUBSTRING_INDEX to extract file name of your mp3 file i.e. find the string after last occurence of “/” in your hotfiles url.

2. Use CONCAT to append the file name retreived to new url prefix and update it in the database.

Here is an example, you can appropriately change it for your database:

mysql> select * from test_songs;
+---------------------------------------------------------------+
| song_url                                                      |
+---------------------------------------------------------------+
| http://hotfile.com/dl/157490069/c8732d4/mp3_file_name.mp3     |
| http://www.hotfile.com/dl/123412312/dd732d4/mp3_song_name.mp3 |
+---------------------------------------------------------------+

Taking substrings:

mysql> select SUBSTRING_INDEX(song_url,"/",-1) from test_songs;
+----------------------------------+
| SUBSTRING_INDEX(song_url,"/",-1) |
+----------------------------------+
| mp3_file_name.mp3                |
| mp3_song_name.mp3                |
+----------------------------------+
2 rows in set (0.03 sec)

Creating final update query:

mysql> Update test_songs set song_url =
CONCAT("http//p.music.cdndomain.com/vod/music.folder/2010/",
        SUBSTRING_INDEX(song_url,"/",-1)) ;
Query OK, 2 rows affected (0.00 sec)
Rows matched: 2  Changed: 2  Warnings: 0

Checking the results :

mysql> select * from test_songs;
+---------------------------------------------------------------------+
| song_url                                                            |
+---------------------------------------------------------------------+
| http//p.music.cdndomain.com/vod/music.folder/2010/mp3_file_name.mp3 |
| http//p.music.cdndomain.com/vod/music.folder/2010/mp3_song_name.mp3 |
+---------------------------------------------------------------------+
2 rows in set (0.00 sec)

Done !