my $param = $q->param('report_type');
print "param=" . $param . "<BR>";
if( grep { /$param/ } (qw/case_id hosp_alias sender receiver/) ) {
    print "we are getting the list<BR>";
} else {
    print "we are NOT getting the list<BR>";
}

##</code><code>##

s**lil*;  $*=join'',sort split q**;  s;.*;grr; &&s+(.(.)).+$2$1+; $; =
qq-$_-;s,.*,ahc,;$,.=chop for split q,,,reverse;print for($,,$;,$*,$/)