pagination in php and keeping results - php

Question

have tried to implement a pagination script in my php code (adopted from a sample code i found on the net)
the page returns resaults of a mysql query. the default is an empty 'keyword' which returns all data from databse.
succeeded as far as pagination works when all data is returned but when i filter results through a keyword search clicking 'next page' returns the next page in unfiltered results (ie the searched keyword is lost in the refresh)
this is the relevant code (hope it makes sense):
Blockquote
$txt1='<A HREF="/memimomedia/music/128kb/';
$txt2='" ><IMG src="/Save.png" width="24" height="24" align="middle" border="0"></A>';
$txt9a='<a href="';
$txt9b='" target="_blank">';
$txt9c='</a>';
$txt10a='<audio src="./128kb/';
$txt10d='" controls></audio>';
if(empty($_POST['searchkeywords']) && empty($_GET['searchkeywords'])) { $result = mysql_query("SELECT *
FROM ppl_tracks WHERE Mixed !='0' ORDER BY Track"); }
if(!empty($_GET['searchkeywords'])) { $Searchword=$_GET['searchkeywords']; }
if(!empty($_POST['searchkeywords'])) { $Searchword=$_POST['searchkeywords']; }
$Totalresults = mysql_query("SELECT Track FROM (ppl_tracks LEFT JOIN
TrackStyle ON ppl_tracks.RECNO = TrackStyle.TrackID LEFT JOIN
StyleTable ON TrackStyle.StyleID = StyleTable.ID) LEFT JOIN TrackMood
ON ppl_tracks.RECNO = TrackMood.TrackID LEFT JOIN MoodTable ON
TrackMood.MoodID = MoodTable.ID WHERE (MoodChoices LIKE
'%$Searchword%' OR Description LIKE '%$Searchword%' OR StyleChoices
LIKE '%$Searchword%' OR Tempo LIKE '%$Searchword%' OR Track LIKE
'%$Searchword%' ) AND Mixed =true GROUP BY Track ORDER BY Track" );
//This checks to see if there is a page number. If not, it will set it
to page 1 if(isset($_GET['pagenum'])) { $pagenum =
$_GET['pagenum']; } else { $pagenum = 1; }
//Here we count the number of results
$hits = mysql_num_rows($Totalresults);
//This is the number of results displayed per page
$page_hits = 15;
//This tells us the page number of our last page
$last = ceil($hits/$page_hits);
//this makes sure the page number isn't below one, or more than our
maximum pages
if ($pagenum < 1)
{
$pagenum = 1;
}
elseif ($pagenum > $last)
{
$pagenum = $last;
}
//This sets the range to display in our query
$max = 'limit ' .($pagenum - 1) * $page_hits .',' .$page_hits;
$result = mysql_query("SELECT * FROM (ppl_tracks LEFT JOIN TrackStyle
ON ppl_tracks.RECNO = TrackStyle.TrackID LEFT JOIN StyleTable ON
TrackStyle.StyleID = StyleTable.ID) LEFT JOIN TrackMood ON
ppl_tracks.RECNO = TrackMood.TrackID LEFT JOIN MoodTable ON
TrackMood.MoodID = MoodTable.ID WHERE (MoodChoices LIKE
'%$Searchword%' OR Description LIKE '%$Searchword%' OR StyleChoices
LIKE '%$Searchword%' OR Tempo LIKE '%$Searchword%' OR Track LIKE
'%$Searchword%' ) AND Mixed =true GROUP BY Track ORDER BY Track $max"
);
echo " Track -
Artist Description Download ";
$color="1";
while($row = mysql_fetch_array($result)) { $SelectedStyles =
array(); $Track=$row['Track']; $SelectedStylesQuery = mysql_query("
SELECT StyleChoices FROM ppl_tracks LEFT JOIN TrackStyle ON
ppl_tracks.RECNO = TrackStyle.TrackID LEFT JOIN StyleTable ON
TrackStyle.StyleID = StyleTable.ID WHERE ppl_tracks.Track='$Track'");
while($row1 = mysql_fetch_array($SelectedStylesQuery)) {
$SelectedStyles[] = $row1[StyleChoices]; } $SelectedMoods = array(); $SelectedMoodsQuery = mysql_query(" SELECT MoodChoices FROM
ppl_tracks LEFT JOIN TrackMood ON ppl_tracks.RECNO = TrackMood.TrackID
LEFT JOIN MoodTable ON TrackMood.MoodID = MoodTable.ID WHERE
ppl_tracks.Track='$Track'"); while($row2 =
mysql_fetch_array($SelectedMoodsQuery)) {
$SelectedMoods[] = $row2[MoodChoices]; } sort($SelectedMoods); sort($SelectedStyles); $stringS= implode(", ", $SelectedStyles);
$stringM= implode(", ", $SelectedMoods);
if($color==1) { echo ""; echo "" . $row['Track'] . " - " .
ucwords($row['Artist']) . ""; echo "" . $stringM .
"".$stringS.""; echo "" . $txt1.$row['FileName'].$txt2 .
""; echo "" . $txt10a.$row['FileName'].$txt10d."";
echo ""; $color="2"; }
else { echo ""; echo "" . $row['Track'] . " - " .
ucwords($row['Artist']) . ""; echo "" . $stringM .
"".$stringS.""; echo "" . $txt1.$row['FileName'].$txt2 .
""; echo "" . $txt10a.$row['FileName'].$txt10d."";
echo ""; $color="1";}
} echo "";
// This shows the user what page they are on, and the total number of
pages
echo " --Page $pagenum of $last-- "; // First we check if we
are on page one. If we are then we don't need a link to the previous
page or the first page so we do nothing. If we aren't then we generate
links to the first page, and to the previous page.
if ($pagenum == 1)
{
}
else
{ echo " <<-First ";
echo " - "; $previous = $pagenum-1; echo " <-Previous "; }
$counter=1; while ( $counter <= $last )
{
if ($counter==$pagenum)
{
echo " - ";
echo " $counter ";
echo " - ";
}
else
{
echo " - ";
echo " <a href='{$_SERVER['PHP_SELF']}?pagenum=$counter'>$counter</a> ";
echo " - ";
} $counter = $counter + 1; }
//This does the same as above, only checking if we are on the last
page, and then generating the Next and Last links
if ($pagenum == $last)
{
}
else { $next = $pagenum+1; echo " Next -> "; echo " -
"; echo " Last ->>
"; } mysql_close($con); ?>

Answer 1

You are reloading the page every time you go onto a new page, so you need to pass the search term into the page again. The easiest way to do this is to update your link for pagination to the following:
echo " <a href='{$_SERVER['PHP_SELF']}?searchkeywords=" . $_REQUEST["searchkeywords"] . "&pagenum=$counter'>$counter</a> ";
$_REQUEST will handle both $_POST and $_GET variables, but you may want to do this in your own way. Simply put you just need to pass the searchkeywords back into your url