我有一个分页问题。当我在浏览器中加载此页面并单击类别链接以显示我的产品时,第一页显示的产品有限,并且分页链接已到位,但它不断将我发送到第一页,对于任何分页链接都是零我点击。但奇怪的是当我改变
$offset=($pageNum - 1) * $perPage;
至
$offset=($pageNum)= $perPage;
如果在单击类别后显示我要显示的其余产品。所以问题可能出在页面或附近的某个地方。
这是我的代码。
<?php
$productUlList="";
error_reporting (E_ALL ^ E_NOTICE);
include_once "convenientglobal2localhost.php";
$result = mysql_query("SELECT * FROM category WHERE 1")or die(mysql_error());
while($rowp=mysql_fetch_array($result)){
$categoryId=$rowp['catId'];
$categoryName=$rowp['catName'];
$productUlList.='
<ul id="ul" >
<li id="lists"> <a href="'.$_SERVER['PHP_SELF'].'?category='.$categoryName.'"> '.$categoryName.' </a> </li>
</ul>';
}
?>
<?php
$msg_to_user3='';
$productList.='';
$categoryList='';
include_once "convenientglobal2localhost.php";
$perPage= 3;
if(isset($_GET['category']))
$categoryNames=$_GET['category'];
$pageNum=(isset($_GET['page']))? (int)$_GET['page']: 1;
$pages_query= mysql_query("SELECT * FROM products INNER JOIN category ON categoryName=catName WHERE categoryName='$categoryNames'");
$numrows= mysql_num_rows($pages_query);
$maxpages=ceil($numrows / $perPage);
$offset=($pageNum-1) * $perPage;
if ($offset < 0)
{
$offset = 0 ;
}
include_once "convenientglobal2localhost.php";
$results = mysql_query("SELECT * FROM products WHERE categoryName='$categoryNames' LIMIT $offset, $perPage")or die(mysql_error());
$num=mysql_num_rows($results);
if($num > 0){
while($row=mysql_fetch_array($results)){
$productId=$row['productId'];
$productName=$row['name'];
$productDescription=$row['description'];
$productPrice=$row['price'];
$productDiscountedPrice=$row['discountedPrice'];
$productStock=$row['stock'];
$productCategory=$row['categoryName'];
$categoryId=$row['catId'];
$catName=$row['catName'];
$categoryList='<table><th id="toptable"></th></table>
<table id="categorytable">
<th><img src="inventory_category_images/' . $categoryId . '.jpg" width="498px"; height="125px";/></th>
</table>';
$productList.='<table id="productoutputtable">
<tr>
<td rowspan="7" valign="top"><img style="border-style=solid; border-color:#767475; padding=; "src="inventory_images/' . $productId . '.jpg" width="150" height="135"/>
</td>
</tr>
<tr>
<td id="tablecolor" ><strong>Product</strong></td>
<td colspan="2">' . $productName . ' </td>
<td id="tablecolor"><strong>Category</strong></td>
<td>' . $productCategory . ' </td>
</tr>
<tr>
<td id="tablecolor"><strong>Description:</strong></td>
<td colspan="3">' . $productDescription . ' </td>
</tr>
<tr>
<td id="tablecolor" ><strong>Price:</strong></td>
<td>$' . $productPrice . ' </td>
</tr><tr>
<td id="tablecolor"colspan="1"><strong>Sale Price:</strong></td>
<td>$' . $productDiscountedPrice . ' </td>
<td id="tablecolor"colspan="2"><strong>In Stock </strong></td>
<td>' . $productStock . ' </td>
</tr>
</table>';
}
$self= $_SERVER['PHP_SELF'];
for($page=1; $page<=$maxpages; $page++){
if($page == $pageNum){
$nav= "$page";
}
else{
$nav= "<a href=\"$self?page=$page\">$page</a>";
}
}
if($page > 1)
{
$page=$pageNum-1;
$prev ="<a href=\"$self?page=$page\">[Prev]</a>";
$first="<a href=\"$self?page=1\">[First Page]</a>";
}
else
{
$prev= " ";
$first=" ";
}
if($pageNum < $maxPages)
{
$page=$pageNum+1;
$next ="<a href=\"$self?page=$page\">[Next]</a>";
$last="<a href=\"$self?page=$maxPages\">[Last Page]</a>";
}
else
{
$next= " ";
$last=" ";
}
$pageList.= $first. $prev. $nav. $next. $last;
}
else{
$msg_to_user3="You have no products listed.";
}
//$pageList.="";
//for($i = 0 ; $i <= $maxpages ; $i++) {
//if($i == $page) {
//$pageList.= "<B>$i</B>";
//}else{
//$pageList.= '<A HREF="?page='.$i.'">'.$i.'</A>';
//
//}
//}
?>
谢谢大家的帮助!!!