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php分页遇到的有关问题

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Release: 2016-06-13 10:36:35
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php分页遇到的问题
刚学习php,在php100下载了视频教程,可是根据教程里第十三讲给的分页demo,发现运行出错,请大虾给分析下什么原因呢?数据库表为test,字段包括:id、name、sex;运行下面的demo,可现实第一页内容,但是点击下一页的时候不翻页。url地址为http://localhost/bbs2/page.php?page=2,再点击下一页url为http://localhost/bbs2/page.php?page=2&page=2;这个地址就不对了,应该是http://localhost/bbs2/page.php?page=3吧。

HTML code
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--><?php function _PAGEFT($totle, $displaypg = 20, $url = '') {        global $page, $firstcount, $pagenav, $_SERVER;        $GLOBALS["displaypg"] = $displaypg;        if (!$page)            $page = 1;        if (!$url) {            $url = $_SERVER["REQUEST_URI"];        }        //URL分析:        $parse_url = parse_url($url);        $url_query = $parse_url["query"]; //单独取出URL的查询字串        if ($url_query) {            $url_query = ereg_replace("(^|&)page=$page", "", $url_query);            $url = str_replace($parse_url["query"], $url_query, $url);            if ($url_query)                $url .= "&page";            else                $url .= "page";        } else {            $url .= "?page";        }        $lastpg = ceil($totle / $displaypg); //最后页,也是总页数        $page = min($lastpg, $page);        $prepg = $page -1; //上一页        $nextpg = ($page == $lastpg ? 0 : $page +1); //下一页        $firstcount = ($page -1) * $displaypg;        //开始分页导航条代码:        $pagenav = "显示第 <B>" . ($totle ? ($firstcount +1) : 0) . "-<b>" . min($firstcount + $displaypg, $totle) . "</b> 条记录,共 $totle 条记录";        //如果只有一页则跳出函数:        if ($lastpg 首页 ";        if ($prepg)            $pagenav .= " <a href="%24url=%24prepg">前页</a> ";        else            $pagenav .= " 前页 ";        if ($nextpg)            $pagenav .= " <a href="%24url=%24nextpg">后页</a> ";        else            $pagenav .= " 后页 ";        $pagenav .= " <a href="%24url=%24lastpg">尾页</a> ";        //下拉跳转列表,循环列出所有页码:        $pagenav .= " 到第 <select name="topage" size="1" onchange='window.location=\"$url=\"+this.value'>\n";        for ($i = 1; $i $i\n";            else                $pagenav .= "<option value="$i">$i</option>\n";        }        $pagenav .= "</select> 页,共 $lastpg 页";    }include("conn.php");$result=mysql_query("SELECT * FROM `test`");$total=mysql_num_rows($result);//调用pageft(),每页显示10条信息(使用默认的20时,可以省略此参数),使用本页URL(默认,所以省略掉)。_PAGEFT($total,5);echo $pagenav;$result=mysql_query("SELECT * FROM `test` limit $firstcount,$displaypg ");while($row=mysql_fetch_array($result)){echo "<hr><b>".$row[name]." | ".$row[sex];}?></b>
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------解决方案--------------------
这个教程真是害人,太不靠谱了。 不如你在网上找找源码自己改改看
找了半天没看见 $_GET['page'], LIMIT 这两个分页必需词汇
------解决方案--------------------
PHP code
$nowPage = is_numeric($_GET['page']) ? $_GET['page'] : 1; // 当前页$displaypg = 5; //每页显示五个条目;firstcount = ($nowPage-1)*$displaypg;$result=mysql_query("SELECT * FROM `test` limit $firstcount,$displaypg ");<br><font color="#e78608">------解决方案--------------------</font><br>不翻页是你的page没有得到<br><br>这分页程序够雷人的<br><br>太坑人了<br><br>写那么大一片<br><br>去掉一半运行都不会有问题<br><font color="#e78608">------解决方案--------------------</font><br>
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