1. No Profile Picture
    Junior Member
    Devshed Newbie (0 - 499 posts)

    Join Date
    Aug 2000
    Bartlett, TN, USA
    Rep Power
    I'm referring to the article published on www.phpbuilder.com titled "Building Next/Prev Buttons for Query Results". I'm trying to fit the article's suggestions to my own application. Asking only for my own clarification and understanding, are we querying the db/table twice for the same information? Is this the best way? I'm including the code from the article below. Thank you in advance. I hope I haven't offending the author of the article...


    $limit=20; // rows to return
    $numresults=mysql_query("select * from TABLE where YOUR CONDITIONAL HERE order by WHATEVER");
    // next determine if offset has been passed to script, if not use 0
    if (empty($offset)) {
    // get results
    $result=mysql_query("select id,name,phone ".
        "from TABLE where YOUR CONDITIONAL HERE ".
        "order by WHATEVER limit $offset,$limit");
    // now you can display the results returned
    while ($data=mysql_fetch_array($result)) {
        // include code to display results as you see fit
    // next we need to do the links to other results
    if ($offset==1) { // bypass PREV link if offset is 0
        print "<a href="$PHP_SELF?offset=$prevoffset">PREV</a> &nbsp; n";
    // calculate number of pages needing links
    // $pages now contains int of pages needed unless there is a remainder from division
    if ($numrows%$limit) {
        // has remainder so add one page
    for ($i=1;$i<=$pages;$i++) { // loop thru
        print "<a href="$PHP_SELF?offset=$newoffset">$i</a> &nbsp; n";
    // check to see if last page
    if (!(($offset/$limit)==$pages) && $pages!=1) {
        // not last page so give NEXT link
        print "<a href="$PHP_SELF?offset=$newoffset">NEXT</a><p>n";
  2. #2
  3. No Profile Picture
    Apprentice Deity
    Devshed Loyal (3000 - 3499 posts)

    Join Date
    Jul 1999
    Niagara Falls (On the wrong side of the gorge)
    Rep Power
    Yes, you'll query twice. Don't worry, selects in MySQL are quick and painless.

    However, instead of the select * from .. to get the number of rows, use select count(*) instead. I was half asleep when I wrote that.

Similar Threads

  1. feedback - span links = yuck
    By shreela in forum Dev Shed Lounge
    Replies: 2
    Last Post: January 28th, 2004, 11:59 PM
  2. query syntax error
    By collegebloke in forum MS SQL Development
    Replies: 1
    Last Post: January 19th, 2004, 04:08 PM
  3. Overwriting mysql query with the query results
    By onerandomday in forum PHP Development
    Replies: 1
    Last Post: January 14th, 2004, 04:45 AM
  4. query multiple selection boxes
    By zayin7232 in forum PHP Development
    Replies: 13
    Last Post: December 30th, 2003, 09:11 PM
  5. Syntax error in INSERT INTO query
    By Lee Miles in forum Visual Basic Programming
    Replies: 6
    Last Post: December 19th, 2003, 07:37 AM

IMN logo majestic logo threadwatch logo seochat tools logo