一个不错的php分页函数

<?php
/**
 * 1.获取页数
 */
$page = empty($_GET['p'])?1:($_GET['p']);

/**
 * 2.处理数据
 */

// 链接数据库
$host = "127.0.0.1";
$user = "root";
$pwd = "root";
$db = "test";
$mysqli = mysqli_connect($host $user $pwd $db);
if (!$mysqli) {
	echo "数据库连接错误";
	exit();
}

// 设置参数
$pageSize = 10;

// 查询并显示数据(分页公式:(当前页-1)*每页显示的条数 每页显示的条数)
$sql = "select * from page limit ".($page-1)*$pageSize.""."{$pageSize}";
$result = mysqli_query($mysqli $sql);
echo "<table border=1 cellspacing=1 width=30%>";
echo "<tr><td>编号</td><td>姓名</td></tr>";
while ($row = mysqli_fetch_assoc($result)) {
	echo "<tr>";
	echo "<td>{$row['id']}</td><td>{$row['name']}</td>";
	echo "</tr>";
}
echo "</table>";

// 查询总的页数
$total_sql = "select count(*) from page";
$total_result = mysqli_fetch_array(mysqli_query($mysqli$total_sql));
$total = ceil($total_result[0]/$pageSize);
mysqli_close($mysqli);

/**
 * 3.输出分页
 */

$showPage =5;// 显示页数
$banner_page = "<div class='page'>";
$pageOffSet = ($showPage-1)/2;//偏移量
if ($page>1) {
	$banner_page.= "<a href='".$_SERVER['PHP_SELF']."?p=1'>首页</a>";
	$banner_page.= "<a href='".$_SERVER['PHP_SELF']."?p=".($page-1)."'>上一页</a>";
}

// 初始化数据
$start = 1;
$end = $total;

// 数字前的省略(该部分内容顺序不可修改!!!)
if ($total>$showPage) {
	if($page>$pageOffSet+1){
		$banner_page .= "...";
	}
	if($page>$pageOffSet) {
		$start = $page-$pageOffSet;
		$end = $total>$page+$pageOffSet?$page+$pageOffSet:$total;
	}else{
		$start = 1;
		$end = $total>$showPage?$showPage:$total;
	}
	if($page+$pageOffSet>$total){
		$start = $start-($page+$pageOffSet-$end);
	}
}

// 中间省略
for ($i=$start; $i <= $end; $i++) {
	$banner_page.= "<a href='".$_SERVER['PHP_SELF']."?p=".($i)."'>{$i}</a>";
}

// 尾部的省略
if ($total>$showPage && $total>($page+$pageOffSet)) {
	$banner_page.= "...";
}

if ($page<$total) {
	$banner_page.= "<a href='".$_SERVER['PHP_SELF']."?p=".($page+1)."'>下一页</a>";
	$banner_page.= "<a href='".$_SERVER['PHP_SELF']."?p={$total}'>尾页</a>";
}

// 自定义跳转页数
$banner_page.="共{$total}页跳转到<form method='get' action='".$_SERVER['PHP_SELF']."'><input type='text' name='p' size='5' />页<input type='submit' value='跳转'/></form></div>";

echo "$banner_page";

?>