??? ?? ???? PHP+Mysql ??
<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;
$ShowPage=3;
//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>{$row['sex']}</td>";
echo "<tr>";
}
echo "</table>";
//釋放結(jié)果
mysql_free_result($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(jì)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(jì)算偏移量
$pageffset=($ShowPage-1)/2;
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>";
}
//初始化數(shù)據(jù)
$start=1;
$end=$to_pages;
if ($to_pages>$ShowPage){
if($page>$pageffset+1){
$page_banner.="...";
}
if ($page>$pageffset){
$start=$page-$pageffset;
$end=$to_pages>$page+$pageffset?$page+$pageffset:$to_pages;
}else{
$start=1;
$end=$to_pages>$ShowPage?$ShowPage:$to_pages;
}
if ($page+$pageffset>$to_pages){
$start=$start-($page+$pageffset-$end);
}
}
for($i=$start;$i<=$end;$i++){
$page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=".($i)."'>{$i}</a>";
}
//尾部省略
if ($to_pages>$ShowPage&&$to_pages>$page+$pageffset){
$page_banner.="...";
}
if ($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>???? ?? ??? ??? ??? ?? ?????. ?? ???? ??? ???? ??? ??? ??? ???.
?? ??
$ShowPage=3; 3?? ??? ??? ??
$pageffset=( $ShowPage-1)/2; ??? ??? 3?? ??? ???? 1? ? ?? 2? ??? 1? ????. ?? ?? ??? ??? ?? ??? ??? ?? ????? ?????.
$start=1;
$end=$to_pages;
if ($to_pages>$ShowPage){
if($page>$pageffset+1){
$page_banner.="...";
}?? ??? ?? ??? ??? ??? ??, ?? ???? ??? + 1 ???? ???...??
if ($page>$pageffset){
$start=$page-$pageffset;
$end=$to_pages>$page+$pageffset?$page+$pageffset:$to_pages;$start ?? ?? ?? ???? ????? ? ?? , ?? ??? ?? ???? ?????. ???
$end ? ??? ???. ? ??? ?? ?? ???? ???? ?? ??? ?? ? ??? ?? ???? ???? ?? ????.
else{
$start=1;
$end=$to_pages>$ShowPage?$ShowPage:$to_pages;
}?? ???? ??? ????? ??? ?? ??? 1
? ?? ?? ???? ??? ??? ???? ???. , ?? ??? ??? ??? ???? ??? ??? ?? ??? ??? ?????
if ($page+$pageffset>$to_pages){
$start=$start-($page+$pageffset-$end);??? ??? ???? ?? ?? ??? ????? ?? ?? ??? ?? ?? ???? ?? ???? ???? ?? ?? ? ?? ???? ? ??? ? ????.
}
for($i=$start;$i<=$end;$i++){
$page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=".($i)."'>{$i}</a>";
}??? ?? ??
//尾部省略
if ($to_pages>$ShowPage&&$to_pages>$page+$pageffset){
$page_banner.="...";
}?? ??? ?? ??? ??? ??? ??, ??? ???? ?? ???? ???? ?? ??? ?? ?????
