open (FILE, "/somepath/temp.txt");
$inp_counter = 0;
$var_counter = 0;

while (<FILE>) {

    if ( /^Page.\s*=\s*(.*)/ ){
               push @input_page_array, $1;
               $inp_counter = @input_page_array;
    }
    elsif ( /^Start*/../^End*/) {
               $line=$_;
       if ($line=~/^\s*(\w+)\s=\s(.*)/ ){
           if ($1 eq "varname") {
                   # if varname is found, and if it is 
                      not the first time, then push the 
                      hash into an array
                   if ($var_counter != 0) {
                   push @AoH, {%h};
               }
               $var_counter++;
               %h = &initialize_struct( $1, $2, $inp_counter)
           }
           else {
              createpair( $1, $2);
           }
       }
    }
}

# push the final pair into the array
push @AoH, {%h};


# get the elements in the array that correspond to the pagenum.. in th
+is case, i am getting all elements for page 2
for $i ( 0 .. $#AoH ) {
   for $role (sort( keys %{ $AoH[$i] } )) {
       if ($role eq "pagenum" && $AoH[$i]{"pagenum"} == 2) {
                       push @required, $i;
       }
   }
}

#print the elements for the selected page
foreach $ii (@required) {
   for $role1 (sort( keys %{ $AoH[$ii] } )) {
               print "$role1=$AoH[$ii]{$role1}\n";
       }
       print "\n\n";
}


# subroutine to initialize the structure and add 'pagenum' and 'varnam
+e'
sub initialize_struct()
{
       my ( $key, $value, $inp_cnt) = @_;
       my %hh;

       %hh = ( pagenum => "", 
               varvame => "", 
               varval => "",             
               etc... , etc... );

       $hh{$key} = $value;
       $hh{'pagenum'} = $inp_cnt;

       return %hh;
};

# subroutine to populate rest of the data structure
sub createpair{
   my($key, $value) = @_;
   $h{$key} = $value;
};
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Considered by gmax: EDIT - change title to "parsing config file" (to tell apart from data structure), add code tags around data sample

Janitored by Arunbear: changed title and added code tags