Sometimes you may want a target URL to contain information that can only be determined at the time of the redirect. For example, the client’s username.
Redirection allows you to use shortcodes in a redirect’s target URL. The most basic shortcodes allow data to be inserted:
[userid]– the client’s user ID, if logged in, or0if not logged in[userlogin]– the client’s user login (login name), if logged in, or nothing if not logged in[unixtime]– the current time, in Unix time format
For example:
/profile/[userlogin]
Some shortcodes can contain data, and this data will be transformed. You would typically use this in a regular expression to transform some captured data.
The following transform shortcodes are supported:
[md5]data[/md5]– convert the data to the MD5 of the data[upper]data[/upper]– uppercase the data[lower]data[/lower]– lowercase the data[dashes]data[/dashes]– convert any underscores in the data to dashes[underscores]data[/underscores]– convert any dashes in the data to underscores
For example, your old site might use underscores to seperate words and you want to convert this to dashes:
Source: /oldsite/(.*)
Target: /newsite/[dashes]$1[/dashes]
Shortcodes use the standard WordPress shortcode handling functions.