Moving a file is effectively the same as renaming a file. Perhaps slightly different point of view on the user's side of things, but to the machine, moving and renaming are one and the same.

Excerpt from perldoc -f rename:

rename OLDNAME,NEWNAME
    Changes the name of a file; an existing file NEWNAME
    will be clobbered. Returns true for success, false
    otherwise.
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This means you can do something like this in your code:

rename(
    '/home/fred/public_html/temp/image.gif',
    '/home/fred/public_html/final/image.gif'
) or die( "rename failed: $!" );
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