PHP实现数据分页显示的简单实例

$pageSize = 1; //每页显示的数量
$rowCount = 0; //要从数据库中获取
$pageNow = 1; //当前显示第几页

//如果有pageNow就使用，没有就默认第一页。
if (!empty($_GET['pageNow'])){
$pageNow = $_GET['pageNow'];
}

$pageCount = 0; //表示共有多少页

$sql1 = "select count(id) from user";
$res1 = mysql_query($sql1);

if($row1=mysql_fetch_row($res1)){
$rowCount = $row1[0];
}

//计算共有多少页，ceil取进1
$pageCount = ceil(($rowCount/$pageSize));

//使用sql语句时，注意有些变量应取出赋值。
$pre = ($pageNow-1)*$pageSize;

$sql2 = "select * from user limit $pre,$pageSize";
$res2 = mysql_query($sql2);

while($row=mysql_fetch_assoc($res2)){
echo $row['user_name']."
";
echo $row['name']."
";
echo $row['email']."
";
echo $row['password']."
";
echo $row['tel']."
";
}
for ($i=1;$i<=$pageCount;$i++){
echo "$i";
}
?>

while($row=mysql_fetch_assoc($res2)){
echo $row['user_name']."
";
echo $row['name']."
";
echo $row['email']."
";
echo $row['password']."
";
echo $row['tel']."
";
}
if($pageNow>1){
$prePage = $pageNow-1;
echo "pre";
}
if($pageNow<$pageCount){
$nextPage = $pageNow+1;
echo "next";
echo "当前页{$pageNow}/共{$pageCount}页";
}
echo "

";
?>

<form action="userList.php">
<input type="text" name="pageNow">
<input type="submit" value="GO">