一段PHP的分页程序,报错
这是翻页程序:
- PHP code
<!-- Code highlighting produced by Actipro CodeHighlighter (freeware) http://www.CodeHighlighter.com/ --> include_once('conn.php'); if(isset($_GET['pclass'])) { $p_class=$_GET['pclass']; } else { $p_class=''; } $respage = mysql_query("SELECT COUNT(*) FROM product where p_class='$p_class';"); //$num 是数据表中符合条件的总纪录数 while($row = mysql_fetch_assoc($respage)) { $num = $row[0];//这一行报错:Notice: Undefined offset: 0 in D:\setup\xampp\htdocs\products\showclass.php on line 88 } $recordnum =40; // 每页显示多少条记录, $pages = ceil($num/$recordnum); //一共有多少页 if (@$_GET["page"]) // 获取 url 中的参数 page { //$pre 和 $next 为后面前一页和后一页的连接参数 page 的值 // 如果 url 中的参数为 1 ,把当前页置为 1 前一页, $pre 也为一, $next 为 2 if($_GET["page"]==1) { $current = 1;//当前页 $pre = 1; //$pre 是前一页的 $next = 2; //$next 是后一页 } else { $current = $_GET["page"]; $pre = $current-1; $next = $current+1; } // 如果 url 中的参数不为一(不是第一页),就把当前页取值为 url 中获得的参数, $pre 为当前页减 1 , $next 为加 1 } else { $current = 1; $pre = '1'; $next = 2; }// 如果 url 中没有参数 page ,当前页置为 1 , $pre=1,$next=2 $now = ($current-1)*$recordnum; $echopage = "
".$pages." 页 | "; $echopage .= "第一页 | 最后一页 | ";//报错:Notice: Undefined index: HP_SELF in D:\setup\xampp\htdocs\products\showclass.php on line 120 $echopage .= "前一页 后一页 | ";//报错:Notice: Undefined index: HP_SELF in D:\setup\xampp\htdocs\products\showclass.php on line 120 $echopage .= "到第 页 | "; $echopage .= "
下面是放在需要分页地方的代码:
- PHP code
<!-- Code highlighting produced by Actipro CodeHighlighter (freeware) http://www.CodeHighlighter.com/ --> <td><div id="page"><?php echo $echopage ?></div></td>
=====在WEB端报错:
Notice: Undefined offset: 0 in D:\setup\xampp\htdocs\products\showclass.php on line 88
Notice: Undefined index: HP_SELF in D:\setup\xampp\htdocs\products\showclass.php on line 120
Notice: Undefined index: HP_SELF in D:\setup\xampp\htdocs\products\showclass.php on line 120
Notice: Undefined index: HP_SELF in D:\setup\xampp\htdocs\products\showclass.php on line 121
------解决方案--------------------
$num = $row[0];//这一行报错
是因为 mysql_fetch_assoc 返回的是关联数组,没有下标
改为 mysql_fetch_array
HP_SELF 应为 PHP_SELF

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