分页返回不正确的数量

Question

我已经建立了基于本网站http://tuts.wtfdiary.com/2012/06/simple-pagination-using-php-with-css.html

我稍微改变它，但它给我一点点麻烦在分页脚本。如果结果分散在40多个条目中，则它应该是每页10个，因此理论上它应该显示5个页面？但很多时候它会展示更多。

有人会直接指出我的意思吗？我的代码是下面....

谢谢你们:)

<?php 

//include ("db.php"); 
include_once 'header.php'; 

$ddoption=''; 

if (isset($_GET['searchid'])){ 
$searchid = $_GET['searchid']; 
} 
//$result=mysql_query("select count(*) from product"); 
$result=mysql_query("select count(*) from product WHERE (title OR description LIKE '%".$searchid."%')OR(title ='".$searchid."') OR(description='".$searchid."')"); 
$row=mysql_fetch_row($result); 
$tr=$row[0]; 
$rpp=10; 
$pn=1; 
$searchid = ''; 


if (isset($_GET['searchid'])){ 
$searchid = $_GET['searchid']; 
} 

if(isset($_GET['pn'])) 
{ 
    $pn=$_GET['pn']; 
} 

$oldtp=($tr/$rpp); 

$tp=round($oldtp); 

if($tr%$rpp>0) 
{ 
    $tp++; 
} 
$from=(($pn-1)*$rpp)/*+1*/; 
$to=($pn)*($rpp)-1; 
//$result=mysql_query("SELECT * from product WHERE productid between $from AND $to"); 


//$result=mysql_query("SELECT * FROM product WHERE productid between $from AND $to AND title OR description LIKE '%".$id."%'"); 
echo "<h1> Results from ". $from." to ".$to. "</h1>"; 

if(isset($_GET['option'])){ 
$ddoption = $_GET['option']; 
if($ddoption=="both"){ 
$result=mysql_query("SELECT * FROM product WHERE (title LIKE '%".$searchid."%')OR (description LIKE '%".$searchid."%') OR(title ='".$searchid."') OR(description='".$searchid."') ORDER BY productid DESC LIMIT $from,10"); 
} 
else if($ddoption=="title"){ 
$result=mysql_query("SELECT * FROM product WHERE (title LIKE '%".$searchid."%')OR(title ='".$searchid."') ORDER BY productid DESC LIMIT $from,10"); 
} 
else{ 
$result=mysql_query("SELECT * FROM product WHERE (description LIKE '%".$searchid."%')OR(description='".$searchid."') ORDER BY productid DESC LIMIT $from,10"); 
} 
} 
echo "<table>"; 


while($row=mysql_fetch_array($result)) 
{ 

echo '<tr><td><a href="item.php?id='. $row['productid'].'">'.'<img src="'.$row['image1'].'" alt="'.$row['title'].'" height="100" width="100"/></a></td>'; 
     echo '<td><a href="item.php?id='. $row['productid'].'">'.$row['title'].'</a></td></tr>'; 

} 

echo "</table>"; 
echo "<ul id='pages'>"; 
for($i=1;$i<=$tp;$i++) 
{ 
echo "<li><a href='search.php?pn=$i&searchid=$searchid&amp;option=$ddoption'>Page $i</a></li>"; 
} 
echo "</ul>"; 


echo <<<_END 

</body> 
</html> 


_END; 

?> 

Answer 1

您可以在一个行数页面：

$tp = ceil($tr/$rpp); 

，而不是

$oldtp=($tr/$rpp); 

$tp=round($oldtp); 

if($tr%$rpp>0) 
{ 
    $tp++; 
} 

的可能原因不同数量的行是您计算行数和替换它们时查询不同的行数。