PHP+Mysql開發(fā)分頁之首頁與尾頁的顯示
<html>
<head>
<meta http-equiv="CONTENT-TYPE" content="text/html;">
</head>
<body>
<?php
/** 1.傳入頁面 **/
$page = $_GET['p'];
/** 2.根據(jù)頁面取出數(shù)據(jù)：php->mysql **/
$host = "localhost";
$username = 'root';
$password = '123456789';
$db = 'bbs2';
$PageSize=5;
//連接數(shù)據(jù)庫
$conn = mysql_connect($host, $username, $password);
if(!$conn){
echo "數(shù)據(jù)庫連接失敗";
exit;
}
//選擇所要操作的數(shù)據(jù)庫
mysql_select_db($db);
//設(shè)置數(shù)據(jù)庫編碼格式
mysql_query('SET NAMES UTF8');
//編寫sql獲取分頁數(shù)據(jù)：SELECT * FROM 表名 LIMIT 起始位置 , 顯示條數(shù)
$sql = "SELECT*FROM test LIMIT ".($page-1)*$PageSize .",$PageSize";
if(!$sql){
echo "取出不成功";
};
//把sql語句傳送到數(shù)據(jù)庫
$result = mysql_query($sql);
//處理我們的數(shù)據(jù)
echo "<table border=1 cellspacing=0 width=15% >";
echo "<tr><td>ID</td><td>名字</td><td>性別</td></tr>";
while($row = mysql_fetch_assoc($result)){
echo "<tr>";
echo "<td>{$row['id']}</td>";
echo "<td>{$row['name']}</td>";
echo "<td>{$row['sex']}</td>";
echo "<tr>";
}
//釋放結(jié)果
mysql_free_result($result);
//獲取數(shù)據(jù)總數(shù)
$to_sql="SELECT COUNT(*)FROM test";
$to_result=mysql_fetch_array(mysql_query($to_sql));
$to=$to_result[0];
//計算頁數(shù)
$to_pages=ceil($to/$PageSize);
mysql_close($conn);
/** 3.顯示數(shù)據(jù)+分頁條 **/
$page_banner="";
//計算偏移量
if($page>1){
$page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=1'>首頁</a>";
$page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=".($page-1)."'>上一頁</a>";
}
if ($page<$to_pages){
$page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=".($page+1)."'>下一頁</a>";
$page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=".($to_pages)."'>尾頁</a>";
}
$page_banner.="共{$to_pages}頁";
echo $page_banner;
?>
</body>
</html>
透過新增首頁和尾頁，讓分頁欄跳轉(zhuǎn)更輕鬆
程式碼解釋：
if($page>1){
$page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=1'>首頁</a>";
$page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=".($page-1)."'>上一頁</a>";
}當$page>1時顯示首頁和上一頁
if ($page<$to_pages){
$page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=".($page+1)."'>下一頁</a>";
$page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=".($to_pages)."'>尾頁</a>";
}當頁數(shù)小於總頁數(shù)時，顯示下一個和尾頁
$page_banner.="共{$to_pages}頁";
echo $page_banner;輸出總頁數(shù)。
