無法在數據庫中逐行移動使用php

Question

我一直試圖在我的數據庫中的項目表中選擇最新的行，並顯示標題，描述以及存儲在單獨的項目中的圖像文件夾，但路徑存儲在同一個表中。我可以顯示行，但我的上一個按鈕不起作用，它會轉到第一行。我希望它在每次單擊時移動一行。請幫忙。下面是我的代碼

<?php 
include("scripts/connection.php"); 
session_start(); 
if (empty($_SESSION["username"])){ 
header("Location:login.php"); 
} 
$posts = "SELECT ID, Title, Description, PostDate, Image1, Image2, Image3 FROM items Order By PostDate"; 
$select = mysql_query($posts); 
$numrows = mysql_num_rows($select); 

if (isset($_POST['previous'])){ 
For($i=1,$i>=0,$i--){ 
mysql_data_seek ($select, $i); 
$row=mysql_fetch_assoc($select); 
$ID ="$row[ID]"; 
$title = "$row[Title]"; 
$datetime = "$row[PostDate]"; 
$image1 = "$row[Image1]"; 
$image2 = "$row[Image2]"; 
$image3 = "$row[Image3]"; 
$description = "$row[Description]"; 
} 
}else{ 

while ($row = mysql_fetch_assoc($select)){ 
$ID ="$row[ID]"; 
$title = "$row[Title]"; 
$datetime = "$row[PostDate]"; 
$image1 = "$row[Image1]"; 
$image2 = "$row[Image2]"; 
$image3 = "$row[Image3]"; 
$description = "$row[Description]"; 
} 
} 
?> 

Answer 1

嘗試對它們進行排序按日期降序：

$posts = "SELECT ID, Title, Description, PostDate, Image1, Image2, Image3 FROM items Order By PostDate desc ";