分页不起作用。如果我点击第二页它会进入我的主页

时间:2014-07-02 06:10:23

标签: php pagination

if(!isset($_REQUEST['id'])) {
    header("location: index.php");
}
else
{
    $id = $_REQUEST['id'];
}


include ("admin-login/function/db_connect.php");


        /* ===================== Pagination Code Starts ================== */
        $adjacents = 7;


        $statement = $db->prepare("SELECT "
    . "tbl_post.post_id, tbl_post.post_title, tbl_post.post_description, tbl_post.post_date, tbl_cate.cat_id, tbl_cate.cat_name, tbl_link.post_id, tbl_link.cat_id "
    . "FROM "
    . "tbl_post, tbl_cate, tbl_link "
    . "WHERE "
    . "tbl_post.post_id = tbl_link.post_id "
    . "and  "
    . "tbl_cate.cat_id = tbl_link.cat_id "
    . "ORDER BY post_date DESC");
        $statement->execute();
        $total_pages = $statement->rowCount();


        $targetpage = $_SERVER['PHP_SELF'];   //your file name  (the name of this file)
        $limit = 2;                                 //how many items to show per page
        $page = @$_GET['page'];
        if($page) 
            $start = ($page - 1) * $limit;          //first item to display on this page
        else
            $start = 0;


        $statement = $db->prepare("SELECT "
    . "tbl_post.post_id, tbl_post.post_title, tbl_post.post_description, tbl_post.post_date, tbl_cate.cat_id, tbl_cate.cat_name, tbl_link.post_id, tbl_link.cat_id "
    . "FROM "
    . "tbl_post, tbl_cate, tbl_link "
    . "WHERE "
    . "tbl_post.post_id = tbl_link.post_id "
    . "and  "
    . "tbl_cate.cat_id = tbl_link.cat_id "
    . "ORDER BY post_date DESC LIMIT $start, $limit");
        $statement->execute();
        $result = $statement->fetchAll(PDO::FETCH_ASSOC);


        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;   
        $pagination = "";
        if($lastpage > 1)
        {   
            $pagination .= "<div class=\"pagination\">";
            if ($page > 1) 
                $pagination.= "<a href=\"$targetpage?page=$prev\">&#171; previous</a>";
            else
                $pagination.= "<span class=\"disabled\">&#171; previous</span>";    
            if ($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
            {
                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 &#187;</a>";
            else
                $pagination.= "<span class=\"disabled\">next &#187;</span>";
            $pagination.= "</div>\n";       
        }
        /* ===================== Pagination Code Ends ================== */ 


foreach($result as $row)
{
     if ($row['cat_id']==45){ //this is category id. restricted for 45 number category
    <div class="loop_page">
         <a href="single.php?id=<?php echo $row['post_id']; ?>"> <h1><?php echo $row['post_title']; ?> </h1></a>

 }
       }

 echo $pagination;

如果点击第二页,则转到index.php。请帮助我一位专家。

4 个答案:

答案 0 :(得分:0)

您的脚本的第一个条件是,如果未设置$_REQUEST['id'],它将重定向到您的主页。如果不阅读其余的代码,你应该排除它;你是否通过页面请求传递了一个id?

答案 1 :(得分:0)

我建议你可以使用tabsorter jquery库 http://tablesorter.com/docs/

请在此处查看演示 http://tablesorter.com/docs/example-pager.html

它比编码php简单得多

答案 2 :(得分:0)

你永远不会在你的分页中设置一个id值,并使用$ _GET或$ _POST而不是$ _REQUEST。

答案 3 :(得分:0)

首先这整个代码是可注射的,请使用准备好的查询。

if(!isset($_REQUEST['id'])) {
header("location: index.php");
}
else
{
$id = $_REQUEST['id'];
}

不要重定向设置$ id = 0/1 您使用页面发送请求但缓存只有id。试试以下

if(!isset($_REQUEST['page'])) {
header("location: index.php");
}
else
{
$id = $_REQUEST['page '];
}

**您可以尝试https://github.com/saaiful/datatableHelper。它具有自定义查询构建器和排序,搜索和分页。