我正在尝试从mysql中获取数据并使用分页显示类别。我正在考虑类别明智的结果，但在分页中，我看到第二页以后的重复结果
查看link:
当我点击它正在运行的类别时。但看看分页。最后几页是空白的。我想明智地显示图片类别。假设当我点击新娘时它将只显示新娘图片。我有两张桌子，即类别和专辑。在类别中我有id和cname，在相册中我有id，cid，缩略图，图片。 cid来自类别表，实际上是类别表的id
这是代码
<?php
$query="SELECT * FROM `category` WHERE `id`='$_GET[cat_id]'";
$sql=mysql_query($query);
while($row=mysql_fetch_array($sql))
{
?>
<div class="container">
<h3><?="$row[cname]"; }?></h3>
<?php
//================paging============================================
if($_GET[page_no])
{
$page_no=$_GET[page_no];
}else{
$page_no=1;
}
if($_POST[page])
{
$upper_limit = $_POST[page];
}else{
if($_GET[upper_limit])
{
$upper_limit = $_GET[upper_limit];
}else
{
$upper_limit = 21;
}
}
$lower_limit = $upper_limit * ($page_no - 1);
$sql2="SELECT * FROM `album` WHERE `id`='$_GET[cat_id]'";
$res2=mysql_query($sql2);
$num=mysql_num_rows($res2);
$num_of_page = intval($num/$upper_limit);
if($num%$upper_limit!=0)
{
$num_of_page = $num_of_page + 1;
}
//==================================================================
$count=$lower_limit;
$c=1;
$sel = "SELECT * FROM `album` ORDER BY id DESC LIMIT $lower_limit , $upper_limit";
$res=mysql_query($sel);
$num=mysql_num_rows($res);
if($num!="")
{
$sel="SELECT * FROM `album` WHERE `cid`='$_GET[cat_id]'";
$tab=mysql_query($sel);
while($row1=mysql_fetch_array($tab))
{
print "<a class='fancybox-buttons' data-fancybox-group='button' href='admin/$row1[picture]'><img src='admin/$row1[thumbnail]' /></a> ";
$c++;
}
?>
<?php
//=======================================================================
$prev = $page_no - 1;
$next = $page_no + 1;
print "<center><TABLE >
<TR>
<TD align='center'>";
if($page_no!=1)
{
print "<a href='gallery-cat-photo.php?page_no=$prev&upper_limit=$upper_limit'><font size='' color='#660066'>Previous</font></a> ";
}
for($i=1; $i<=$num_of_page; $i++)
{
if($page_no==$i)
{
print " <span class='title'><font size='' color='#ff0099'>( $i )</font></span> ";
}else{
print " <a href='gallery-cat-photo.php?page_no=$i&upper_limit=$upper_limit'><font size='' color='#009933'>$i</font></a> ";
}
}
if($page_no!=$num_of_page)
{
print " <a href='gallery-cat-photo.php?page_no=$next&upper_limit=$upper_limit'><font size='' color='#660066'>Next</font></a>";
}
//========================================================================
print "</TD>
</TR></TABLE></center>
";
}
else
{
print "<BR><h3><marquee behavior='alternate'><CENTER><FONT SIZE='3' COLOR='#ff0000'><B><I>There are no photos</I></B></FONT></CENTER></marquee></h3>";
}
?>
将代码更改为以下内容，但仍然提供相同的错误
<?php
/*
Place code to connect to your DB here.
*/
include('admin/lib/connection.php'); // include your code to connect to DB.
$tbl_name="album"; //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 $tbl_name WHERE `cid`='$_GET[cat_id]'";
$total_pages = mysql_fetch_array(mysql_query($query));
$total_pages = $total_pages[num];
/* Setup vars for query. */
$targetpage = "gallery-cat-photo.php"; //your file name (the name of this file)
$limit = 21; //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 $tbl_name WHERE `cid`='$_GET[cat_id]' 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($result))
{
// Your while loop here
print "<figure class='photo2 element view'><a class='fancybox-buttons' data-fancybox-group='button' href='admin/$row[picture]'><img src='admin/$row[thumbnail]' /></a></figure>";
}
?>
</div>
<?=$pagination?>
答案 0 :(得分：1)
你可以像这样尝试分页，只需传递你需要的参数。
$per_page = 30;
$start = $_GET['start'];
$record_count = mysql_num_rows(mysql_query("select * from categories"));
$max_pages = $record_count / $per_page;
if (!$start)
$start = 0;
$get = mysql_query("select * from categories limit $start, $per_page");
while ($row = mysql_fetch_assoc($get))
{
$id = $row['cat_id'];
$name = $row['cat_name'];
echo $id." (".$name.")<br />";
}
$prev = $start - $per_page;
$next = $start + $per_page;
if(!($start<=0))
echo "<a href='paging.php?start=$prev' style='text-decoration:none'>Previous</a>";
$i=1;
for ($x=0;$x<$record_count;$x=$x+$per_page)
{
if($start!=$x)
echo "<a href='paging.php?start=$x' style='text-decoration:none'> $i </a>";
else
echo "<a href='paging.php?start=$x' style='text-decoration:none'> <b>$i</b> </a>";
$i++;
}
if(!($start>=$record_count-$per_page))
echo "<a href='paging.php?start=$next' style='text-decoration:none'>Next</a>";