I actually wrote a module that handles this once; feel free to use its code: 
# DynInterp.pm
package DynInterp;
use overload '""' => 'stringify';

sub new {
    my $class = shift;
    bless [@_], $class;
}

sub stringify {
    my $this = shift;
    return join('', map { ref($_)eq'SCALAR'?$$_:ref($_)eq'ARRAY'?"@{$_
+}":$_ } @$this);
}
1;

[download]
And here is an example file with which to use it: 
# ---------------------
# dyninterp.pl
#!/usr/bin/perl -l 
use DynInterp;
$x = new DynInterp('the value of $y is ', \$y, '.'); 
$z = new DynInterp('the value of $y is ', \@y, '.'); 
$y=5;
print $x; 
$y=8; 
print $x;
@y = qw(a b c d);
print $z;
$"=',';
print $z;
$"='.';
print $z;

[download]
In your particular case you would do 
$var = new DynInterp('date ', \$date);
$date = localtime;
print $var;

[download]
--Stevie-O 
$"=$,,$_=q>|\p4<6 8p<M/_|<('=>
.q>.<4-KI<l|2$<6%s!<qn#F<>;$,
.=pack'N*',"@{[unpack'C*',$_]
}"for split/</;$_=$,,y[A-Z a-z]
         {}cd;print lc

[download]

In reply to Re: Evaluating variables when called by Stevie-O
in thread Evaluating variables when called by qadwjoh

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