分页错误

Question

将ASC显示给DESC的分页是：

if($page == 1) { $pstart = 0; } else { $pstart = $page * $totalrows; }
$pend = $pstart + $totalrows; 

和HTML代码从ASC到DESC

<form action="<?=$_SERVER["SCRIPT_NAME"];?>" method="get">
    <div>

    <a class="page-numbers" href="<?=$_SERVER["SCRIPT_NAME"];?>?p=<?=$page + 1;?>">Next</a>
     <input class="page-numbers" name="p" type="text" value="<?=$page + 1;?>" /> <input class="page-numbers" type="submit" value="Jump" />
     </div>

     </form>

我现在使用此SQL显示DESC到ASC帖子：

$sql = "SELECT posts.Tags as tags, posts.OwnerUserId as postsid, posts.Id as postid, posts.Body as body, posts.Title as title, users.Id as userid, users.DisplayName as usersname FROM posts JOIN users ON posts.OwnerUserId = users.Id WHERE posts.Id >= " . $pstart . " AND posts.Title != '' ORDER by posts.Id DESC LIMIT " . $totalrows;

我应该更改什么PHP代码，因为要显示DESC到ASC帖子和分页以显示接下来的10个帖子

Answer 1

更改LIMIT部分（语法为LIMIT offset，row_count）

$sql = "SELECT posts.Tags as tags, posts.OwnerUserId as postsid, posts.Id as postid, posts.Body as body, posts.Title as title, users.Id as userid, users.DisplayName as usersname FROM posts JOIN users ON posts.OwnerUserId = users.Id WHERE posts.Id >= " . $pstart . " AND posts.Title != '' ORDER by posts.Id DESC LIMIT " . (($page-1) * $totalrows) .",". $totalrows;

Answer 2

您可以使用sql LIMIT命令将自己限制为10个结果＆amp;传递偏移量。 另外，您的代码if($page == 1) { $pstart = 0; } else { $pstart = $page * $totalrows; } $pend = $pstart + $totalrows;
不正确 - 对于第1页，$ pstart将为0，但对于第2页，$ sptart将为20，使您跳过记录10-19。