【发布时间】：2013-03-12 08:58:33
【问题描述】：
我有一个看起来相当好用的分页脚本，我将它转换为 PDO，但在解析两个变量时遇到了问题。
页面的网址是
current-events.php?event_id=62
当我转到第 2 页时，网址显示为
urrent-events.php?page=2
但是它仍然显示第 1 页的结果，我缺少 event_id
问题似乎是我无法调用 event_id 和页面。
任何人都可以看到我的方式的错误吗？
谢谢
加里
<?php
require_once("pdoconnect.inc.php");
$event_id = $_GET['event_id'];
?>
/////////////////////////////////////////////////////////
$tbl_name="victims"; //your table name
// How many adjacent pages should be shown on each side?
$adjacents = 3;
/*
First get total number of rows in data table.
If you have a WHERE clause in your query, make sure you mirror it here.
*/
$query = "SELECT event_id FROM $tbl_name WHERE event_id = '$event_id' ";
$q = $conn->prepare($query);
$q->execute();
$total_pages = $q->rowCount();
echo $total_pages;
//$total_pages = mysql_fetch_array(mysql_query($query));
//$total_pages = $total_pages[num];
//?event_id=$event_id
$targetpage = "current-events.php"; //your file name (the name of this file)
//how many items to show per page
$limit = 10;
$page = $_GET['page'];
if($page)
$start = ($page - 1) * $limit; //first item to display on this page
else
$start = 0; //if no page var is given, set start to 0
/* Get data. */
$sql = "SELECT * FROM $tbl_name WHERE event_id = '$_GET[event_id]' ORDER BY lname ASC LIMIT $start, $limit ";
$result = $conn->prepare($sql);
$result->execute();
//$result = mysql_query($sql);
/* Setup page vars for display. */
if ($page == 0) $page = 1; //if no page var is given, default to 1.
$prev = $page - 1; //previous page is page - 1
$next = $page + 1; //next page is page + 1
$lastpage = ceil($total_pages/$limit); //lastpage is = total pages / items per page, rounded up.
$lpm1 = $lastpage - 1; //last page minus 1
/*
Now we apply our rules and draw the pagination object.
We're actually saving the code to a variable in case we want to draw it more than once.
*/
$pagination = "";
if($lastpage > 1)
{
$pagination .= "<div class=\"pagination\">";
//previous button
if ($page > 1)
$pagination.= "<a href=\"$targetpage?page=$prev\">� previous</a>";
else
$pagination.= "<span class=\"disabled\">� previous</span>";
//pages
if ($lastpage < 7 + ($adjacents * 2)) //not enough pages to bother breaking it up
{
for ($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
{
//close to beginning; only hide later pages
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>";
}
//in middle; hide some front and some back
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>";
}
//close to end; only hide early pages
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>";
}
}
}
//next button
if ($page < $counter - 1)
$pagination.= "<a href=\"$targetpage?page=$next\"> next � </a>";
else
$pagination.= "<span class=\"disabled\"> next � </span>";
$pagination.= "</div>\n";
}
?>
<table>
【问题讨论】：
-
请注意：您仍然容易受到 sql 注入的影响。使用 pdo 不会神奇地使您免受注射。了解如何进行适当的准备查询。
标签： php pdo pagination