我该如何为这个MySQL&PHP查询。
if (isset($_GET['c'])) {
$c = $_GET['c'];
}
$query = mysql_query("SELECT * FROM Categories WHERE category = '$c' ");
WHILE($datarows = mysql_fetch_array($query)):
$id = $datarows['id'];
$category = $datarows['category'];
$code = $datarows['code'];
endwhile;
$query2 = mysql_query("SELECT * FROM Games WHERE category = '$code' ");
WHILE($datarows_cat = mysql_fetch_array($query2)):
$title = $datarows_cat['title'];
$description = $datarows_cat['description'];
$imgurl = $datarows_cat['image_name'];
$category = $datarows_cat['category'];
$views = $datarows_cat['view_count'];
$pagename = $datarows_cat['pagename'];
$featured = $datarows_cat['featured'];
if ($featured =="1") {$f = "<img src='http://my-site.com/images/star.png' width='13px' title='Featured Game' /> Featured"; } else {$f = "";}
if(is_int($views/2)) {
$views = $views / 2;
} else { $views = $views / 2 + .5; }
if (strlen($description) > 95) {
$desc= substr($description,0,95);
$desmod = "$desc...<br/><a href='"http://my-site.com/$pagename#1'" title='"$description'">- Read More</a>";
}
else {$desmod = "$description";}
echo "$f - <a href='"http://my-site.com/$pagename'">$title - $desmod</a><br/>";
endwhile;
当我来访时http://my-site.com/categories/Action例如，代码在我的类别表中查找该类别，然后一旦获得该类别的唯一代码，它就会运行另一个查询，在另一个表中查找具有该类别代码的所有游戏。然而，目前，我有200多个游戏加载单个类别，这会导致大量的加载时间。
谢谢你的帮助！
首先了解特定类别有多少游戏
更改线路
$query2 = mysql_query("SELECT * FROM Games WHERE category = '$code' ");
至
$sql="SELECT * FROM Games WHERE category = '$code' ";
$query_count=mysql_query($sql);
在其后添加以下内容
$per_page =30;//define how many games for a page
$count = mysql_num_rows($query_count);
$pages = ceil($count/$per_page);
if($_GET['page']==""){
$page="1";
}else{
$page=$_GET['page'];
}
$start = ($page - 1) * $per_page;
$sql = $sql." LIMIT $start,$per_page";
$query2=mysql_query($sql);
然后显示您想要的页数
<ul id="pagination">
<?php
//Show page links
for ($i = 1; $i <= $pages; $i++)
{?>
<li id="<?php echo $i;?>"><a href="linktoyourfile?c=<?php echo $c;?>&page=<?php echo $i;?>"><?php echo $i;?></a></li>
<?php
}
?>
</ul>
使用CSS进行分页这将完成
//database connation
<?php
$conn = new mysqli("localhost", "root", "","database_name");
?>
<!DOCTYPE html>
<html>enter code here
<head>
<title>View Student Details</title>
<h1 align="center"> Student Details </h1>
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="bootstrap/bootstrap.min.js"></script>
<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css">
</head>
<body>
<div class="row">
<div class="col-sm-2"></div>
<div class="col-sm-8">
<form>
<table class="table table-striped">
<tr>
<th>Sr.No.</th>
<th>Student ID</th>
<th>Student Name</th>
<th>Class</th>
<th>Gender</th>
<th>Birth of Date</th>
<th>Contact No.</th>
<th>Action</th>
</tr>
<?php
$count=0;
if(isset($_GET['page_count']))
{
$count=1;
$page_count=$_GET['page_count']-1;
$count=$page_count*10;
}
$q="SELECT * from student_detail LIMIT $count,10";
$result=$conn->query($q);
$j=0;
while($data=$result->fetch_array())
{ $j=$j+1;
?>
<tr>
<td><?php echo $j ?></td>
<td><?php echo $data['std_id'] ?></td>
<td><?php echo $data['std_name'] ?></td>
<td><?php echo $data['std_class'] ?></td>
<td><?php echo $data['gender'] ?></td>
<td><?php echo $data['bod'] ?></td>
<td><?php echo $data['contact'] ?></td>
<td>
<div class="row">
<div class="col-sm-12">
<a href="delete_master.php?std_id=<?php echo $data['std_id']; ?>" class="btn btn-danger">Delete</a>
<a href="update.php?std_id=<?php echo $data['std_id']; ?>" class="btn btn-danger">Update</a>
</div>
</div>
</td>
</tr>
<?php } ?>
</table>
<ul class="pagination">
<?php
$q="SELECT count(std_id) from student_detail";
$result=$conn->query($q);
$data=$result->fetch_array();
$total=$data[0];
$total_page=ceil($total/10);
if($total_page>1)
{
for($i=1;$i<=$total_page;$i++)
{
?>
<li class="active"><a href="view.php?page_count=<?php echo $i;?>" name="page_count" id="page_count"><?php echo $i; ?></a></li>
<?php
}
}
?>
</ul>
</form>
<div class="col-sm-2"></div>
</div>
</div>
</body>
</html>
Pagiantion, it is working simple and easy
<?php
$sql = "SELECT COUNT(id) FROM contact_info";
$rs_result = $conn->query($sql);
$row = mysqli_fetch_row($rs_result);
$total_records = $row[0];
echo $total_records;
$previous = 1;
$total_pages = ceil($total_records / $limit);
$next = $_GET["page"] + 1;
$previous = $_GET["page"] - 1;
$pagLink = "<span>";
if($previous ==0)
{
$prev = "<a href='javascript:void(0);' >Previous</a>";
}
else
{
$prev = "<a href='http://homeacresfinefurniture.com/all-queries.php?page=".$previous."' style='color:black;'>Previous</a>";
};
echo $prev;
"</span><div class='pagination'>";
for ($i=1; $i<=$total_pages; $i++)
{
$pagLink .= "<a href='http://homeacresfinefurniture.com/all-queries.php?page=".$i."'>".$i."</a>";
};
echo $pagLink;
$nex = "<span><a href='http://homeacresfinefurniture.com/all-queries.php?page=".$next."' style='color:black;'>Next</a></span>";
echo $nex;
";
</div>";
?>
从数据库中获取所有数据。
$limit = 1;
if (isset($_GET["page"]))
{
$page = $_GET["page"];
}
else
{
$page=1;
}
$start_from = ($page-1) * $limit;
$sql = "SELECT * FROM contact_info ORDER BY id desc LIMIT $start_from , $limit";
$page = 1;
$limit = 10;
$offset = ($limit * $page) - $limit;
$query = mysqli_query(
$connect,
"SELECT * FROM Games WHERE category = '$code' limit $limit offset $offset"
);