我想构建“Previous＆amp; Next”链接，通过分页显示我的数据库记录。 连接工作正常。我只是不知道如何建立这样的链接。 我怎么能这样做？
<html>
<head>
<title>test_page</title>
</head>
<body>
<table width = "100%"><tr><td width="100%" align = "center">
<?php
$userName = "root";
$pass = "";
$hostname = "localhost";
$conn = mysqli_connect($hostname, $userName, $pass)
or die ("Nije uspostavljena veza sa Vasim mySQL serverom! <br />\n");
echo "Konekcija je uspostavljena! <br />\n";
mysqli_select_db($conn, 'vulkan')
or die ("Ne mogu da nadjem zadatu bazu! <br />\n");
echo ("Baza je pronadjena! <br />\n");
echo "<br /> <br /> <br />";
$id=$_GET['id'];
$currentid=$id;
$result = mysqli_query($conn, "select * from ploce_pod where id=$currentid");
while ($row = mysqli_fetch_array($result))
{
$currentid=$row['id'];
}
$resultPrev = mysqli_query($conn, "select * from ploce_pod where id<$currentid
LIMIT 1");
while($prevRow = mysqli_fetch_array($resultPrev))
{
$previd = $prevRow['id'];
}
$resultNext = mysqli_query($conn, "select * from ploce_pod where id>$currentid
LIMIT 1");
while($nextRow = mysqli_fetch_array($resultNext))
{
$nextid = $nextRow['id'];
}
//here is print table, this is OK
mysqli_close($conn);
echo ("Baza je otkacena! <br />\n");
?>
<p>
<a href="Index.php?id=<?php echo $previd; ?>">prethodni</a>
<a href="Index.php?id=<?php echo $nextid; ?>">sledeci</a>
</p>
</td></tr></table>
</body>
</html>
答案 0 :(得分：0)
您可能需要考虑PHP Pagination
<?php
/*
Place code to connect to your DB here.
*/
include('config.php'); // include your code to connect to DB.
$tbl_name=""; //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";
$total_pages = mysql_fetch_array(mysql_query($query));
$total_pages = $total_pages[num];
/* Setup vars for query. */
$targetpage = "filename.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 column_name FROM $tbl_name 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($result))
{
// Your while loop here
}
?>
<?=$pagination?>