PHP開發(fā)簡(jiǎn)單圖書借閱系統(tǒng)完整主頁(yè)代碼實(shí)現(xiàn)
本節(jié)實(shí)現(xiàn)如下圖的主頁(yè)功能代碼
主頁(yè)面為index.php,包含分類選擇，用戶退出，借書還書功能，各種分頁(yè)顯示。
<?php
include("config.php");
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>圖書管理系統(tǒng)主頁(yè)面</title>
<style>
body,td,th {font-family: 微軟雅黑;font-size: 9px;color: #222;}
body {background-color: #FFFFFF;line-height:20px;}
a:link {color: #222;text-decoration: none;}
a:visited {text-decoration: none;color: #222;}
a:hover {text-decoration: underline;color: #FF0000;}
a:active {text-decoration: none;color: #999999;}
</style>
</head>
<body>
<?php include("head.php");?>
<table width="782" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td height="22">
<?php
$pagesize=5; //每頁(yè)顯示5條數(shù)據(jù)
if(!urldecode($_GET['proid'])){
//urldecode()函數(shù)將 URL 編碼后字符串還原成未編碼的樣子。編碼使用 %## 的格式
$sql="select * from yx_books order by id desc"; //倒序排列
}else{
$sql="select * from yx_books where type='".urldecode($_GET['proid'])."'";
//將查詢出來的書目類別中文字轉(zhuǎn)換為編碼形式
}
$rs=mysqli_query($link,$sql);
$recordcount=mysqli_num_rows($rs); //輸出查詢的總數(shù)
//mysql_num_rows() 返回結(jié)果集中行的數(shù)目。此命令僅對(duì) SELECT 語(yǔ)句有效。
$pagecount=($recordcount-1)/$pagesize+1; //計(jì)算總頁(yè)數(shù)
$pagecount=(int)$pagecount;
$pageno=empty($_GET["pageno"])?'':$_GET["pageno"]; //當(dāng)前頁(yè)
if($pageno=="") //當(dāng)前頁(yè)為空時(shí)顯示第一頁(yè)
{
$pageno=1;
}
if($pageno<1) //當(dāng)前頁(yè)小于第一頁(yè)時(shí)顯示第一頁(yè)
{
$pageno=1;
}
if($pageno>$pagecount) //當(dāng)前頁(yè)數(shù)大于總頁(yè)數(shù)時(shí)顯示總頁(yè)數(shù)
{
$pageno=$pagecount;
}
$startno=($pageno-1)*$pagesize; //每頁(yè)從第幾條數(shù)據(jù)開始顯示
if(!urldecode($_GET["proid"])){
$sql="select * from yx_books order by id desc limit $startno,$pagesize";
}else{
$sql="select * from yx_books where type='".urldecode($_GET['proid'])."'
order by id desc limit $startno,$pagesize";
}
$rs=mysqli_query($link,$sql);
?>
<table width="100%" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#CCCCCC">
<tr>
<td width="88" height="30" align="center" bgcolor="#FFFFFF" class="line2">ID</td>
<td width="103" align="center" bgcolor="#FFFFFF" class="line2">書名</td>
<td width="77" align="center" bgcolor="#FFFFFF" class="line2">價(jià)格</td>
<td width="152" align="center" bgcolor="#FFFFFF" class="line2">入庫(kù)時(shí)間</td>
<td width="107" align="center" bgcolor="#FFFFFF" class="line2">類別</td>
<td width="126" align="center" bgcolor="#FFFFFF" class="line2">現(xiàn)有數(shù)量(本)</td>
<td width="121" align="center" bgcolor="#FFFFFF" class="line2">操作</td>
</tr>
<?php
if(!empty($rs)){
while($rows=mysqli_fetch_array($rs))
{
?>
<tr>
<td height="30" align="center" bgcolor="#FFFFFF"><?php echo $rows["id"];?></td>
<td align="center" bgcolor="#FFFFFF"><?php echo $rows["name"];?></td>
<td align="center" bgcolor="#FFFFFF"><?php echo $rows["price"];?></td>
<td align="center" bgcolor="#FFFFFF"><?php echo $rows["uploadtime"];?></td>
<td align="center" bgcolor="#FFFFFF"><?php echo $rows["type"];?></td>
<td align="center" bgcolor="#FFFFFF"><?php echo $rows["leave_number"];?></td>
<td align="center" bgcolor="#FFFFFF" class="line2">
<?php
$rs2=mysqli_query($link,"select * from lend where book_id='".$rows['id']."'
and user_id='".$_SESSION['id']."'");
$rows2=mysqli_fetch_assoc($rs2);
if($rows2['book_id']){
echo "<font color='red'>您已借閱</font>
<a href=huanshu.php?book_id=".$rows['id'].">我要還書</a>";
}else{
if($rows["leave_number"]==0){
echo "<font color='#cccc00'>該書已借完</font>";
}else{
echo "<a href=jieshu.php?book_id=".$rows['id'].">我要借書</a>";
}
}
?> </td>
</tr>
<?php
}
}
?>
</table>
<table width="100%" border="0" align="center" cellpadding="2" cellspacing="1" bgcolor="#CCCCCC">
<tr>
<td height="35" align="center" bgcolor="#FFFFFF">
<?php
if($pageno==1)
{
?>
首頁(yè) | 上一頁(yè) |
<?php if($pageno+1<= $pagecount) { ?>
<a href="index.php?proid=<?php echo empty($_GET['proid'])?'':urlencode($_GET['proid']);?>
&pageno=<?php echo $pageno + 1 ?>">下一頁(yè)</a> |
<a href="index.php?proid=<?php echo empty($_GET['proid'])?'':urlencode($_GET['proid']);?>
&pageno=<?php echo $pagecount ?>">末頁(yè)</a>
<?php
}
}
else if($pageno==$pagecount)
{
?>
<a href="index.php?proid=<?php echo urlencode($_GET['proid']);?>&pageno=1">首頁(yè)</a> |
<a href="index.php?proid=<?php echo urlencode($_GET['proid']);?>
&pageno=<?php echo $pageno-1?>">上一頁(yè)</a> | 下一頁(yè) | 末頁(yè)
<?php
}
else
{
?>
<a href="index.php?proid=<?php echo urlencode($_GET['proid']);?>&pageno=1">首頁(yè)</a> |
<a href="index.php?proid=<?php echo urlencode($_GET['proid']);?>
&pageno=<?php echo $pageno-1?>">上一頁(yè)</a> |
<a href="index.php?proid=<?php echo urlencode($_GET["proid"]);?>
&pageno=<?php echo $pageno+1?>" class="forumRowHighlight">下一頁(yè)</a> |
<a href="?pageno=<?php echo $pagecount?>">末頁(yè)</a>
<?php
}
?>
頁(yè)次：<?php echo $pageno ?>/<?php echo $pagecount ?>
頁(yè) 共有<?php echo $recordcount?>條信息</td>
</tr>
</table></td></tr>
</table>
<table width="782" height="30" border="0" align="center" cellpadding="2" cellspacing="1" bgcolor="#CCCCCC">
<tr>
<td height="19" align="center"> Copyright @ 2013-2016</td>
</tr>
</table>
</body>
</html>
