PHP develops simple book background management system book query complete code
Introduce the database file config.php file
and the ly_check.php file to determine whether the administrator is logged in
Call the css.css style in the HTML page
Create a book The query is the select.php file
<?php
include("config.php");
require_once('ly_check.php');
?>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>图书查询</title>
<link rel="stylesheet" href="css.css" type="text/css">
</head>
<body>
<table width="80%" border="0" align="center" cellpadding="2" cellspacing="1" class="table">
<tr>
<td width="80%" height="27" valign="top" bgcolor="#FFFFFF" class="bg_tr"> 后台管理 >> 图书查询</td>
<tr>
<td height="27" valign="top" bgcolor="#FFFFFF" class="bg_tr">
<form id="form1" name="form1" method="post" action="" style="margin:0px; padding:0px;">
<table width="45%" height="42" border="0" align="center" cellpadding="0" cellspacing="0" class="bk">
<tr>
<td width="36%" align="center">
<select name="seltype" id="seltype">
<option value="id">图书序号</option>
<option value="name">图书名称</option>
<option value="price">图书价格</option>
<option value="time">入库时间</option>
<option value="type">图书类别</option>
</select>
</td>
<td width="31%" align="center">
<input type="text" name="coun" id="coun" />
</td>
<td width="33%" align="center">
<input type="submit" name="button" id="button" value="查询" />
</td>
</tr>
</table>
</form>
</td>
</tr>
</table>
<table width="80%" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#CCCCCC" class="table" >
<tr>
<td width="7%" height="35" align="center" bgcolor="#FFFFFF">ID</td>
<td width="28%" align="center" bgcolor="#FFFFFF">书名</td>
<td width="12%" align="center" bgcolor="#FFFFFF">价格</td>
<td width="24%" align="center" bgcolor="#FFFFFF">入库时间</td>
<td width="12%" align="center" bgcolor="#FFFFFF">类别</td>
<td width="24%" align="center" bgcolor="#FFFFFF">操作</td>
</tr>
<?php
$pagesize = 8; //每页显示数
$sql = "select * from yx_books where ".$_POST['seltype']." like ('%".$_POST['coun']."%')";
$rs=mysqli_query($link,$sql) or die("请输入查询条件!!!");
$recordcount=mysqli_num_rows($rs);
//mysql_num_rows() 返回结果集中行的数目。此命令仅对 SELECT 语句有效。
$pagecount=($recordcount-1)/$pagesize+1; //计算总页数
$pagecount=(int)$pagecount;
$pageno = $_GET["pageno"]; //获取当前页
if($pageno=="")
{
$pageno=1; //当前页为空时显示第一页
}
if($pageno<1)
{
$pageno=1; //当前页小于第一页时显示第一页
}
if($pageno>$pagecount)
{
$pageno=$pagecount; //当前页数大于总页数时显示总页数
}
$startno=($pageno-1)*$pagesize; //每页从第几条数据开始显示
$sql="select * from yx_books where ".$_POST['seltype']." like ('%".$_POST['coun']."%') order by id desc limit $startno,$pagesize";
$rs=mysqli_query($link,$sql);
?>
<?php
while($rows=mysqli_fetch_assoc($rs))
{
?>
<tr align="center">
<td class="td_bg" width="7%"><?php echo $rows["id"]?></td>
<td class="td_bg" width="28%" height="26"><?php echo $rows["name"]?></td>
<td class="td_bg" width="12%" height="26"><?php echo $rows["price"]?></td>
<td class="td_bg" width="24%" height="26"><?php echo $rows["uploadtime"]?></td>
<td class="td_bg" width="12%" height="26"><?php echo $rows["type"]?></td>
<td class="td_bg" width="24%">
<a href="update.php?id=<?php echo $rows['id'] ?>" class="trlink">修改</a>
<a href="del.php?id=<?php echo $rows['id'] ?>" class="trlink">删除</a>
</td>
</tr>
<?php
}
?>
<tr>
<th height="25" colspan="6" align="center" class="bg_tr">
<?php
if($pageno==1)
{
?>
首页 | 上一页 | <a href="?pageno=<?php echo $pageno+1?>">下一页</a> |
<a href="?pageno=<?php echo $_POST['seltype']?>">末页</a>
<?php
}
else if($pageno==$pagecount)
{
?>
<a href="?pageno=1">首页</a> | <a href="?pageno=<?php echo $pageno-1?>">上一页</a> | 下一页 | 末页
<?php
}
else
{
?>
<a href="?pageno=1">首页</a> | <a href="?pageno=<?php echo $pageno-1?>">上一页</a> |
<a href="?pageno=<?php echo $pageno+1?>" class="forumRowHighlight">下一页</a> |
<a href="?pageno=<?php echo $pagecount?>">末页</a>
<?php
}
?>
页次：<?php echo $pageno ?>/<?php echo $pagecount ?>页 共有<?php echo $recordcount?>条信息 </th>
</tr>
</table>
</body>
</html>In the book query, the book "modify" and "delete" functions continue to use the PHP function code of the update.php modify page and del.php delete page can.
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