I have a script which is reading from a file and i am assigning a variable a value from an element in an array produced during script. I want a section of the script to run only if that value of that element of the array changes , if it does not not i want it to return to the start 
while ($line=<In>) {

@temp = split(/[=]/,$line);

if ($temp[1] >100)
        {
        print "Session id: $temp[1]  ";
        $sessid = $temp[1];

       }

#I want the following to run only if  $sessid changes

      $modtyp = $temp[1];

if($modtyp == 20)
{
print " V34\n\n ";
}

elsif ($modtyp == 9)
        {
print " no connection\n\n";
}

[download]

In reply to runnig part of script when variable changes by splatohara

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.