Extract date from string

I have this string "19991130.htm" how do i make it into "30/11/1999" (dd/mm/yyyy) and insert it into the database whose column is a date field?
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$string =~ s"(\d{4})(\d\d)(\d\d)\.htm"$3/$2/$1";

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irene79Author Commented:
my variable is "19991130.htm" it can be "19991130.html" sometimes.

so how do i get the 1st 8 characters and covert it to "30/11/1999"?

another question is how do i make sure that the date converted is a valid date?
use Time::Local;
$string =~ s"(\d{4})(\d\d)(\d\d).*"$3/$2/$1";
eval{ ($d,$m,$y)=(localtime timelocal(0,0,0,$3,$2-1,$1-1900))[3,4,5] };
if( $@ || $d!=$3 ){ die $@||"invalid date" }
irene79Author Commented:
Thanks ozo!!!
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