1. mam 4 listy rozwijane, które generują 4 zmienne.Są umieszczone w pliku "category.php".
2. po kliknięciu submit formularza przechodzę na stronę "wynik.php" z wynikami spełniającymi
kryteria wyboru z list
3. wszystko chodzi bez zarzutów ( tzn. wyświetlają się przedmioty o danych cechach) do
momentu, aż zastosuję skrypt paginacji ( konieczny, bo nie chcę na jednej stronie wyświetlać
setek elementów).
4. wyświetlają się tylko elementy na pierwszej stronie zaraz po kliknięciu "submit" w pliku
"category.php".Dalej już nie działa - gdy klikam na kolejne strony pojawia się biały ekran.
Na pasku adresu zmienia się tylko nr strony, tzn. wynik.php?page2 itd.
5.Zaznaczam, że sam skrypt paginacji jest ok. Podstawiłem w celach testowych w zapytaniu
stałe zamiast zmiennych i paginacja śmiga aż miło...no ale nie o oto przecież chodzi...
6.nie jestem pewien, czy dobrze ustawiłem sesję: stosuję session_start() na każdej stronie,
na stronie wynik.php piszę
$_SESSION['cid']=$_POST['cid'] ;
$_SESSION['mid']=$_POST['mid'];
$_SESSION['dre']=$_POST['dre'];
$_SESSION['przet']=$_POST['przet'];
po czym na tej samej stronie wrzucam to do zapytania sql z zastosowaniem where i and.
Bardzo proszę kogoś bardziej oblatanego o podpowiedź - być może gdzieś jest trywialny błąd.
Poniżej kod pliku wynik.php:
CODE
<?php
session_start();
// sprawdzenie zawartości wszystkich zmiennych w sesji
foreach($_SESSION as $sesja=>$wartosc) {
echo "<p>".$sesja." = ".$wartosc."</p>";
}
$_SESSION['cid']=$_POST['cid'] ;
$_SESSION['mid']=$_POST['mid'];
$_SESSION['dre']=$_POST['dre'];
$_SESSION['przet']=$_POST['przet'];
/*echo $_SESSION["cid"];
echo $_SESSION["mid"];
echo $_SESSION["dre"];
echo $_SESSION["przet"]; */
$cid=$_SESSION['cid'];
$mid=$_SESSION['mid'];
$dre=$_SESSION['dre'];
$przet=$_SESSION['przet'];
/*
Place code to connect to your DB here.
*/
include('config.php'); // include your code to connect to DB.
$tbl_name="globalna"; //your table name
// 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 $tbl_name WHERE category_id='$cid' AND cena_id='$mid' AND drewno_id='$dre' AND przetworniki_id='$przet' ";
// $query = "SELECT COUNT(*) as num FROM $tbl_name WHERE category_id='".$_POST['cid']."' AND cena_id='".$_POST['mid']."' AND drewno_id='".$_POST['dre']."' AND przetworniki_id='".$_POST['przet']."';
// $query = "SELECT COUNT(*) as num FROM $tbl_name WHERE category_id='".$_GET['cid']."' AND cena_id='".$_GET['mid']."' AND drewno_id='".$_GET['dre']."' AND przetworniki_id='".$_GET['przet']."' ";
// $query = "SELECT COUNT(*) as num FROM $tbl_name WHERE category_id='".$_SESSION['cid']."' AND cena_id='".$_SESSION['mid']."' AND drewno_id='".$_SESSION['dre']."' AND przetworniki_id='".$_SESSION['przet']."' ";
// $query = "SELECT COUNT(*) as num FROM $tbl_name WHERE category_id='". $HTTP_SESSION_VARS['cid']."' AND cena_id='". $HTTP_SESSION_VARS['mid']."' AND drewno_id='". $HTTP_SESSION_VARS['dre']."' AND przetworniki_id='". $HTTP_SESSION_VARS['przet']."' ";
// $query = "SELECT COUNT(*) as num FROM $tbl_name WHERE category_id=1 AND cena_id=2 AND drewno_id=3 AND przetworniki_id=5 ";
// $query = "SELECT COUNT(*) as num FROM $tbl_name ";
$total_pages = mysql_fetch_array(mysql_query($query));
$total_pages = $total_pages[num];
/* Setup vars for query. */
$targetpage = "wynik.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 * FROM $tbl_name WHERE category_id='$cid' AND cena_id='$mid' AND drewno_id='$dre' AND przetworniki_id='$przet' LIMIT $start, $limit";
//$sql = "SELECT * FROM $tbl_name WHERE category_id='".$_POST['cid']."' AND cena_id='".$_POST['mid']."' AND drewno_id='".$_POST['dre']."' AND przetworniki_id='".$_POST['przet']."' LIMIT $start, $limit";
// $sql = "SELECT * FROM $tbl_name WHERE category_id='".$_GET['cid']."' AND cena_id='".$_GET['mid']."' AND drewno_id='".$_GET['dre']."' AND przetworniki_id='".$_GET['przet']."' LIMIT $start, $limit";
// $sql = "SELECT * FROM $tbl_name WHERE category_id='".$_SESSION['cid']."' AND cena_id='".$_SESSION['mid']."' AND drewno_id='".$_SESSION['dre']."' AND przetworniki_id='".$_SESSION['przet']."' LIMIT $start, $limit";
//$sql = "SELECT * FROM $tbl_name WHERE category_id='". $HTTP_SESSION_VARS['cid']."' AND cena_id='". $HTTP_SESSION_VARS['mid']."' AND drewno_id='". $HTTP_SESSION_VARS['dre']."' AND przetworniki_id='". $HTTP_SESSION_VARS['przet']."' LIMIT $start, $limit";
// $sql = "SELECT * FROM $tbl_name WHERE category_id=1 AND cena_id=2 AND drewno_id=3 AND przetworniki_id=5 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
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
if ($page < $counter - 1)
$pagination.= "<a href=\"$targetpage?page=$next\">next �</a>";
else
$pagination.= "<span class=\"disabled\">next �</span>";
$pagination.= "</div>\n";
}
?>
<?php
while($row = mysql_fetch_array($result))
{
// Your while loop here
echo '<tr><td><IMG src="'.
$row['foto'].
'" alt="obrazek
"> </td><td>'.
$row ['firma'].
'</td><td>'.
$row ['model'].
'</td><td>'.
$row ['cena'].
'</td></tr>';
}
?>
<?=$pagination?>
session_start();
// sprawdzenie zawartości wszystkich zmiennych w sesji
foreach($_SESSION as $sesja=>$wartosc) {
echo "<p>".$sesja." = ".$wartosc."</p>";
}
$_SESSION['cid']=$_POST['cid'] ;
$_SESSION['mid']=$_POST['mid'];
$_SESSION['dre']=$_POST['dre'];
$_SESSION['przet']=$_POST['przet'];
/*echo $_SESSION["cid"];
echo $_SESSION["mid"];
echo $_SESSION["dre"];
echo $_SESSION["przet"]; */
$cid=$_SESSION['cid'];
$mid=$_SESSION['mid'];
$dre=$_SESSION['dre'];
$przet=$_SESSION['przet'];
/*
Place code to connect to your DB here.
*/
include('config.php'); // include your code to connect to DB.
$tbl_name="globalna"; //your table name
// 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 $tbl_name WHERE category_id='$cid' AND cena_id='$mid' AND drewno_id='$dre' AND przetworniki_id='$przet' ";
// $query = "SELECT COUNT(*) as num FROM $tbl_name WHERE category_id='".$_POST['cid']."' AND cena_id='".$_POST['mid']."' AND drewno_id='".$_POST['dre']."' AND przetworniki_id='".$_POST['przet']."';
// $query = "SELECT COUNT(*) as num FROM $tbl_name WHERE category_id='".$_GET['cid']."' AND cena_id='".$_GET['mid']."' AND drewno_id='".$_GET['dre']."' AND przetworniki_id='".$_GET['przet']."' ";
// $query = "SELECT COUNT(*) as num FROM $tbl_name WHERE category_id='".$_SESSION['cid']."' AND cena_id='".$_SESSION['mid']."' AND drewno_id='".$_SESSION['dre']."' AND przetworniki_id='".$_SESSION['przet']."' ";
// $query = "SELECT COUNT(*) as num FROM $tbl_name WHERE category_id='". $HTTP_SESSION_VARS['cid']."' AND cena_id='". $HTTP_SESSION_VARS['mid']."' AND drewno_id='". $HTTP_SESSION_VARS['dre']."' AND przetworniki_id='". $HTTP_SESSION_VARS['przet']."' ";
// $query = "SELECT COUNT(*) as num FROM $tbl_name WHERE category_id=1 AND cena_id=2 AND drewno_id=3 AND przetworniki_id=5 ";
// $query = "SELECT COUNT(*) as num FROM $tbl_name ";
$total_pages = mysql_fetch_array(mysql_query($query));
$total_pages = $total_pages[num];
/* Setup vars for query. */
$targetpage = "wynik.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 * FROM $tbl_name WHERE category_id='$cid' AND cena_id='$mid' AND drewno_id='$dre' AND przetworniki_id='$przet' LIMIT $start, $limit";
//$sql = "SELECT * FROM $tbl_name WHERE category_id='".$_POST['cid']."' AND cena_id='".$_POST['mid']."' AND drewno_id='".$_POST['dre']."' AND przetworniki_id='".$_POST['przet']."' LIMIT $start, $limit";
// $sql = "SELECT * FROM $tbl_name WHERE category_id='".$_GET['cid']."' AND cena_id='".$_GET['mid']."' AND drewno_id='".$_GET['dre']."' AND przetworniki_id='".$_GET['przet']."' LIMIT $start, $limit";
// $sql = "SELECT * FROM $tbl_name WHERE category_id='".$_SESSION['cid']."' AND cena_id='".$_SESSION['mid']."' AND drewno_id='".$_SESSION['dre']."' AND przetworniki_id='".$_SESSION['przet']."' LIMIT $start, $limit";
//$sql = "SELECT * FROM $tbl_name WHERE category_id='". $HTTP_SESSION_VARS['cid']."' AND cena_id='". $HTTP_SESSION_VARS['mid']."' AND drewno_id='". $HTTP_SESSION_VARS['dre']."' AND przetworniki_id='". $HTTP_SESSION_VARS['przet']."' LIMIT $start, $limit";
// $sql = "SELECT * FROM $tbl_name WHERE category_id=1 AND cena_id=2 AND drewno_id=3 AND przetworniki_id=5 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
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
if ($page < $counter - 1)
$pagination.= "<a href=\"$targetpage?page=$next\">next �</a>";
else
$pagination.= "<span class=\"disabled\">next �</span>";
$pagination.= "</div>\n";
}
?>
<?php
while($row = mysql_fetch_array($result))
{
// Your while loop here
echo '<tr><td><IMG src="'.
$row['foto'].
'" alt="obrazek
"> </td><td>'.
$row ['firma'].
'</td><td>'.
$row ['model'].
'</td><td>'.
$row ['cena'].
'</td></tr>';
}
?>
<?=$pagination?>