Since you said "array", you can use \$_ == \$array[-1]: 

my @array= ( 1..5 );
for( @array ) {
    if(  \$_ == \$array[-1]  ) {
        print "Last element.\n";
    }
    print $_, $/;
}
__END__
1
2
3
4
Last element.
5

[download]

Update: ikegami asked about Data::Alias being able to confuse this test. Yes, that can be done, and one can even do it w/o such a module but it requires some unusual contortions and so probably isn't something to worry too much about: 

my $five= 5;
*array= sub { \@_ }->( 1, 2, $five, 4, $five );
for( @array ) {
    if(  \$_ == \$array[-1]  ) {
        print "Last element.\n";
    }
    print $_, $/;
}
__END__
1
2
Last element.
5
4
Last element.
5

[download]

- tye        

In reply to Re: Test for the last element in a foreach (==\) by tye
in thread Test for the last element in a foreach by tdevil76

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.