我有一个值，它通过$_POST传递到我的搜索结果页面，并存储在一个名为$term的变量中。该变量位于MySQL查询中，然后运行该查询来显示搜索结果，如果结果超过15个，我会使用分页php脚本将结果分解为几个页面。
第一页很棒，找到了正确数量的结果，并且有正确数量的页面可用。如果我回显变量，正确的值就会存储在其中。但是，如果我选择查看下一批结果并刷新页面，则会列出表中的所有行（就好像查询只是没有参数的SELECT*），并且变量现在是空的
这是我的代码（它有点长，对不起，我打算把它放在另一个页面上，一旦它正常工作，就把它包括在内）
<?php
$tbl_name="accounts";
$adjacents = 3;
if (isset($_POST['basic_search_submit'])){
$term = $_POST['item'];}
$query = "SELECT COUNT(*) as num FROM accounts LEFT JOIN accounts_cstm ON accounts.id = accounts_cstm.id_c WHERE accounts.name LIKE '%$term%' ORDER BY accounts.name";
$total_pages = mysql_fetch_array(mysql_query($query));
$total_pages = $total_pages[num];
$targetpage = "search_results_play.php";
$limit = 15;
$page = $_GET['page'];
if($page)
$start = ($page - 1) * $limit;
else
$start = 0;
$sql = "SELECT * FROM accounts LEFT JOIN accounts_cstm ON accounts.id = accounts_cstm.id_c WHERE accounts.name LIKE '%$term%' ORDER BY accounts.name LIMIT $start, $limit";
$result = mysql_query($sql);
if ($page == 0) $page = 1;
$prev = $page - 1;
$next = $page + 1;
$lastpage = ceil($total_pages/$limit);
$lpm1 = $lastpage - 1;
$pagination = "";
if($lastpage > 1)
{
$pagination .= "<div class='"pagination'">";
if ($page > 1)
$pagination.= "<a href='"$targetpage?page=$prev'">< < previous</a>";
else
$pagination.= "<span class='"disabled'">< < previous</span>";
if ($lastpage < 7 + ($adjacents * 2))
{
for ($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
{
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>";
}
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>";
}
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>";
}
}
}
if ($page < $counter - 1)
$pagination.= "<a href='"$targetpage?page=$next'">next > ></a>";
else
$pagination.= "<span class='"disabled'">next > ></span>";
$pagination.= "</div>'n";
}
?>
<? while ($row = mysql_fetch_array($result)){
//table displaying results
}
?>
<?=$pagination?>
如有任何帮助，我们将不胜感激，感谢
PHP中的变量不会跨页持久存在。当然，除了其中的一些，但常规的$page或$whatever将不会持续。您将加载一个页面，其中包含一些变量，然后在浏览器中完全加载页面后，这些变量将消失。
建议在所有页面的脚本顶部使用session_start()，并使用$_SESSION['variable']=...存储变量。这样，它们将跨页面持久存在。
最简单的解决方案：
$page = $_GET['page'];
将该行替换为：
$page = isset($_SESSION['page']) && is_numeric($_SESSION['page']) ? $_SESSION['page'] : 0;
$_SESSION['page'] = $page;
并在每个脚本的顶部添加session_start()。如果您有一个通用的head-include，或带有mysql身份验证数据的config.php，请将其放在该文件的顶部。
另一种解决方案是使用GET请求进行搜索，并通过$_GET['term']获取术语，并将其附加到生成的链接'&term='. $_GET['term']。这很容易做到。usin $_SESSION['term']的主要缺点是，例如，如果您将页面保留为主页，则该变量将一直保持设置状态，直到会话到期，并可能在将来出现一些问题。