I am using a form in page 1.

When I fill the form and click summit it passes several variable values pickup in page 2, page 2 uses a pagination script and the first time it display the data coming from the form, displaying the values but when i click in the second page in the pagination rows of numbers then the variable coming from page 1 to page 2 turns off only for the query of the three used in the script below WHERE (zip= '$strZipCode') on the very top of the script right below where zip=$strZipCode variable coming from page 1 form is extracted. in this case the variable $strZipCode will activate the query below so, if that variable value is not through then the query won't display it's fields zip, state etc... It does = to false when users goes through pagination in page 2. It seems like the value of $strZipCode is lost. How can I still maintain the variable value through pagination?

what is happening in this query that the variable $strZipCode is not passing true when users paginate through when looking for more set of rows results?
Page 2
PHP Code:
<?php
<?php
    $strName 
= isset($_POST['frmSearch']['name'])?mysql_real_escape_string($_POST['frmSearch']['name']):'';
    
$strZipCode = isset($_POST['frmSearch']['zipcode'])?mysql_real_escape_string($_POST['frmSearch']['zipcode']):'';
    
$strState $_POST['frmSearch']['state']/*)*/;
    
$arrFoodTypes = isset($_POST['frmSearch']['food_types'])?mysql_real_escape_string($_POST['frmSearch']['food_types']):array();
    
$arrOfferings = isset($_POST['frmSearch']['offerings'])?mysql_real_escape_string($_POST['frmSearch']['offerings']):array();
?>
  $query4 = "SELECT state, zip, county
FROM restaurants 
WHERE 
(zip= '$strZipCode')"; 
$result = mysql_query($query4);
$arrstate = mysql_fetch_array($result);
echo '<div class="information"><label>County:</label>
        <div>'. $arrstate['county']. '</div>
      <label>State:</label>
             <div>'. $arrstate['state']. '</div>
           <label>Zip Code:</label>
             <div>'. $arrstate['zip']. '</div></div> <br><br>';
$sql = "SELECT COUNT(*) FROM restaurants";
$result = mysql_query($sql) or trigger_error(mysql_error());
$r = mysql_fetch_row($result);
$numrows = $r[0];

// number of rows to show per page
$rowsperpage = 6;
// find out total pages
$totalpages = ceil($numrows / $rowsperpage);

// get the current page or set a default
if (isset($_GET['currentpage']) && is_numeric($_GET['currentpage'])) {
   // cast var as int
   $currentpage = (int) $_GET['currentpage'];
} else {
   // default page num
   $currentpage = 1;
} // end if

// if current page is greater than total pages...
if ($currentpage > $totalpages) {
   // set current page to last page
   $currentpage = $totalpages;
} // end if
// if current page is less than first page...
if ($currentpage < 1) {
   // set current page to first page
   $currentpage = 1;
} // end if

// the offset of the list, based on current page 
$offset = ($currentpage - 1) * $rowsperpage;
 // get the info from the db 
$sql = "SELECT zip, state, address FROM restaurants LIMIT $offset, $rowsperpage";
$result = mysql_query($sql, $conn) or trigger_error("SQL", E_USER_ERROR);

// while there are rows to be fetched...
while ($list = mysql_fetch_assoc($result)) {
   // echo data
   echo $list['zip'] . " : " . $list['state'] . "<br />";
} // end while

/******  build the pagination links ******/
// range of num links to show
$range = 3;

// if not on page 1, don't show back links
if ($currentpage > 1) {
   // show << link to go back to page 1
   echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=1'><<</a> ";
   // get previous page num
   $prevpage = $currentpage - 1;
   // show < link to go back to 1 page
   echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$prevpage'><</a> ";
} // end if 

// loop to show links to range of pages around current page
for ($x = ($currentpage - $range); $x < (($currentpage + $range) + 1); $x++) {
   // if it's a valid page number...
   if (($x > 0) && ($x <= $totalpages)) {
      // if we're on current page...
      if ($x == $currentpage) {
         // 'highlight' it but don't make a link
         echo " [<b>$x</b>] ";
      // if not current page...
      } else {
         // make it a link
         echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$x'>$x</a> ";
      } // end else
   } // end if 
} // end for
                 
// if not on last page, show forward and last page links        
if ($currentpage != $totalpages) {
   // get next page
   $nextpage = $currentpage + 1;
    // echo forward link for next page 
   echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$nextpage'>></a> ";
   // echo forward link for lastpage
   echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$totalpages'>>></a> ";
} // end if



?>