I am frustrated to no end. I absolutely cannot find the solution to paginating a search result that pulls info from two tables. Everything seems fine at the start. I get a page with the correct number of results (2) and the correct number of page links on the bottom (2-3) But when I click on one of the bottom links, it seems as if the code has thrown out the original query and just pulls the entire database. The number of pages at the bottom match the total entries in the database (19 pages) and shows two random entries. Continuing on to the other links, I see that it's just going through the database and pulling every entry. Not just the 6 entries from my original query.
I'm posting the entire script here, because I have no idea where the problem is. I've tried a hundred changes, and rewritten the script. I still get the same problem.
<?php
$host = "databaseconnect.js";
$select = mysql_select_db($db, $con);
if(!$select){
die(mysql_error());
}
// How many adjacent pages should be shown on each side?
$adjacents = 3;
/*
First get total number of rows in data table.
If you have a WHERE clause in your query, make sure you mirror it here.
*/
$query = "SELECT COUNT(*) as num
FROM
descriptors
JOIN
plantae ON (descriptors.plant_id = plantae.plant_id)
WHERE
descriptors.leaf_shape LIKE '%$select1%'
AND descriptors.leaf_venation LIKE '%$select3%'
AND descriptors.leaf_margin LIKE '%$select4%'";
$total_pages = mysql_fetch_array(mysql_query($query));
$total_pages = $total_pages[num];
/* Setup vars for query. */
$targetpage = "leafsearch4.php"; //your file name (the name of this file)
$limit = 2; //how many items to show per page
$page = $_GET['page'];
if($page)
$start = ($page - 1) * $limit; //first item to display on this page
else
$start = 0; //if no page var is given, set start to 0
/* Get data. */
$sql = "SELECT
descriptors.*
,plantae.*
FROM
descriptors
INNER JOIN
plantae ON (descriptors.plant_id = plantae.plant_id)
WHERE
descriptors.leaf_shape LIKE '%$select1%'
AND descriptors.leaf_venation LIKE '%$select3%'
AND descriptors.leaf_margin LIKE '%$select4%'
ORDER BY plantae.scientific_name ASC LIMIT $start, $limit";
$result = mysql_query($sql);
/* Setup page vars for display. */
if ($page == 0) $page = 1; //if no page var is given, default to 1.
$prev = $page - 1; //previous page is page - 1
$next = $page + 1; //next page is page + 1
$lastpage = ceil($total_pages/$limit); //lastpage is = total pages / items per page, rounded up.
$lpm1 = $lastpage - 1; //last page minus 1
/*
Now we apply our rules and draw the pagination object.
We're actually saving the code to a variable in case we want to draw it more than once.
*/
$pagination = "";
if($lastpage > 1)
{
$pagination .= "<div class=\"pagination\">";
//previous button
if ($page > 1)
$pagination.= "<a href=\"$targetpage?page=$prev\">« previous</a>";
else
$pagination.= "<span class=\"disabled\">« previous</span>";
//pages
if ($lastpage < 7 + ($adjacents * 2)) //not enough pages to bother breaking it up
{
for ($counter = 1; $counter <= $lastpage; $counter++)
{
if ($counter == $page)
$pagination.= "<span class=\"current\">$counter</span>";
else
$pagination.= "<a href=\"$targetpage?page=$counter\">$counter</a>";
}
}
elseif($lastpage > 5 + ($adjacents * 2)) //enough pages to hide some
{
//close to beginning; only hide later pages row 85 or 86
if($page < 1 + ($adjacents * 2))
{
for ($counter = 1; $counter < 4 + ($adjacents * 2); $counter++)
{
if ($counter == $page)
$pagination.= "<span class=\"current\">$counter</span>";
else
$pagination.= "<a href=\"$targetpage?page=$counter\">$counter</a>";
}
$pagination.= "...";
$pagination.= "<a href=\"$targetpage?page=$lpm1\">$lpm1</a>";
$pagination.= "<a href=\"$targetpage?page=$lastpage\">$lastpage</a>";
}
//in middle; hide some front and some back
elseif($lastpage - ($adjacents * 2) > $page && $page > ($adjacents * 2))
{
$pagination.= "<a href=\"$targetpage?page=1\">1</a>";
$pagination.= "<a href=\"$targetpage?page=2\">2</a>";
$pagination.= "...";
for ($counter = $page - $adjacents; $counter <= $page + $adjacents; $counter++)
{
if ($counter == $page)
$pagination.= "<span class=\"current\">$counter</span>";
else
$pagination.= "<a href=\"$targetpage?page=$counter\">$counter</a>";
}
$pagination.= "...";
$pagination.= "<a href=\"$targetpage?page=$lpm1\">$lpm1</a>";
$pagination.= "<a href=\"$targetpage?page=$lastpage\">$lastpage</a>";
}
//close to end; only hide early pages
else
{
$pagination.= "<a href=\"$targetpage?page=1\">1</a>";
$pagination.= "<a href=\"$targetpage?page=2\">2</a>";
$pagination.= "...";
for ($counter = $lastpage - (2 + ($adjacents * 2)); $counter <= $lastpage; $counter++)
{
if ($counter == $page)
$pagination.= "<span class=\"current\">$counter</span>";
else
$pagination.= "<a href=\"$targetpage?page=$counter\">$counter</a>";
}
}
}
//next button row 132
if ($page < $counter - 1)
$pagination.= "<a href=\"$targetpage?page=$next\">next »</a>";
else
$pagination.= "<span class=\"disabled\">next »</span>";
$pagination.= "</div>\n";
}
?>
<?php
echo '<table align="center" border=1 cellspacing="0" cellpading-"5">
<tr>
<td align="left"><b></b></td>
<td align="left"><b></b></td>
<td align="left"><b>Scientific name</b></td>
<td align="left"><b>Common name</b></td>
<td align="left"><b>Leaf shape</b></td>
</tr>';
while($row = mysql_fetch_array($result))
{
echo '<tr>
<td align="left"> <a href="link.php">View plant</a> </td>
<td align="left"> nothing here </td>
<td align="left">' . $row['scientific_name'] . '</td>
<td align="left">test' . $row['common_name'] . '</td>
<td align="left">' . $row['leaf_shape'] . '</td>
</tr>';
}
echo '</table>';
// lost curly b
?>
<?=$pagination?>