分頁錯誤

Question

分頁顯示ASC到DESC是：

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

和HTML代碼是從ASC爲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> 

我告訴現在DESC對於ASC帖子使用這個SQL：

$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; 

什麼php代碼應該改變，因爲顯示DESC到ASC的帖子和分頁顯示下10個帖子

Answer 1

更改限制部分（語法LIMIT偏移，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命令限制自己10個結果&傳遞的偏移量。 也，你的代碼if($page == 1) { $pstart = 0; } else { $pstart = $page * $totalrows; } $pend = $pstart + $totalrows;
是不正確的 - 對於頁1，$ pstart將爲0，但對於頁2，$ sptart將是20，使您跳過記錄10-19。