next / previous buttons

[mfaisalwarraich]

hi everybody,

im trying to make next and previous buttons. im displaying record based on a search. when any image on the search results is clicked then dat image opened in a new page with details about dat imgae on a seperate page. lets say this image as a coupon. now im trying to navigate to next and previous records without going back.

while($resultSet = mysql_fetch_assoc($que)){
$np[] = $rs['item_id'];
}
$_SESSION['np']= $np;

Doing this way im storing all searched ids in an array. this code is at the search results page. and image details page contains the following code.

foreach($_SESSION['np'] as $key=>$value){
$nps[] = $value;
}
$nps = implode(",",$nps);
$numresults=mysql_query("select * from discount_items where item_id IN($nps)");

when an image is clicked at the search results page im redirecting user to image details page and passing id in the url. so i know the current value in the session variable. i have googled around about it but i didnt get any useful solution of it. i tried the following function from php.net:

function array_key_relative($array, $current_key, $offset = 1) {
        // create key map
        $keys = array_keys($array);
        // find current key
        $current_key_index = array_search($current_key, $keys);
        // return desired offset, if in array, or false if not
        if(isset($keys[$current_key_index + $offset])) {
            return $keys[$current_key_index + $offset];
        }
        return false;
    }
 $next_key = array_key_relative($test_array, $_REQUEST['id'], 1); 
 $prev_key = array_key_relative($test_array, $_REQUEST['id'], -1); 
echo "<a href='image_details?id=$next_key'>Next</a><a href='image_details?id=$prev_key'>Previous</a>"

i failed to get the values instead of keys. please tell me how i can get the values. thanx

[mfaisalwarraich]

ok i got the solution myself :)). just by changing array_keys to array_values. it worked.