This is a script which re-orders the notes in a page to match the order of the references. See Wikipedia:Footnote3 for details on how to create such notes and references.
N.B. using scripts directly out of a wiki without checking them for correctness is probably unwise. Minimal documentation is included inline with the script.
The script can be used something like this.
order-footnote.pl < wiki-page > wiki-page-fixed