Mar
17
2012
PHP分页类
<?php
/**
* show(2) 1 ... 62 63 64 65 66 67 68 ... 150
* 分页样式
* #page{font:12px/16px arial}
* #page span{float:left;margin:0px 3px;}
* #page a{float:left;margin:0 3px;border:1px solid #ddd;padding:3px 7px; text-decoration:none;color:#666}
* #page a.now_page,#page a:hover{color:#fff;background:#05c}
*/
class Page
{
public $first_row; //起始行数
public $list_rows; //列表每页显示行数
protected $total_pages; //总页数
protected $total_rows; //总行数
protected $now_page; //当前页数
protected $method = 'defalut'; //处理情况 Ajax分页 Html分页(静态化时) 普通get方式
protected $parameter = '';
protected $page_name; //分页参数的名称
protected $ajax_func_name;
public $plus = 3; //分页偏移量
protected $url;
/**
* Page::__construct()
* 构造函数
* @param mixed $total_rows 总数
* @param mixed $list_rows 每页数
* @param mixed $now_page 当前页:$_GET['p']
* @param string $method 类型:default,html,ajax
* @param string $parameter xxx.com/20-0-0-0-40-?.html替代?处
* @param string $page_name 分页变量 p
* @param string $ajax_func_name ajax函数名称
* @return void
*/
public function __construct($total_rows, $list_rows, $now_page, $method = '', $parameter = '', $page_name = 'p', $ajax_func_name = '')
{
$this->total_rows = $total_rows;
$this->parameter = !empty($parameter) ? $parameter : '';
$this->list_rows = !empty($list_rows) && $list_rows <= 100 ? $list_rows : 15;
$this->total_pages = ceil($this->total_rows / $this->list_rows);
$this->page_name = !empty($page_name) ? $page_name : 'p';
$this->ajax_func_name = !empty($ajax_func_name) ? $ajax_func_name : '';
$this->method = !empty($method) ? $method : '';
/* 当前页面 */
if (!empty($now_page)) {
$this->now_page = intval($now_page);
} else {
$this->now_page = !empty($_GET[$this->page_name]) ? intval($_GET[$this->page_name]) : 1;
}
$this->now_page = $this->now_page <= 0 ? 1 : $this->now_page;
if (!empty($this->total_pages) && $this->now_page > $this->total_pages) {
$this->now_page = $this->total_pages;
}
$this->first_row = $this->list_rows * ($this->now_page - 1);
}
/**
* 得到当前连接
* @param $page
* @param $text
* @return string
*/
protected function _get_link($page, $text)
{
switch ($this->method) {
case 'ajax':
$parameter = '';
if ($this->parameter) {
$parameter = ',' . $this->parameter;
}
return '<a onclick="' . $this->ajax_func_name . '(\'' . $page . '\'' . $parameter . ')" href="javascript:void(0)">' . $text . '</a>' . "\n";
break;
case 'html':
$url = str_replace('?', $page, $this->parameter);
return '<a href="' . $url . '">' . $text . '</a>' . "\n";
break;
default:
return '<a href="' . $this->_get_url($page) . '">' . $text . '</a>' . "\n";
break;
}
}
/**
* 设置当前页面链接
*/
protected function _set_url()
{
$url = $_SERVER['REQUEST_URI'] . (strpos($_SERVER['REQUEST_URI'], '?') ? '' : "?") . $this->parameter;
$parse = parse_url($url);
if (isset($parse['query'])) {
parse_str($parse['query'], $params);
unset($params[$this->page_name]);
$url = $parse['path'] . '?' . http_build_query($params);
}
if (!empty($params)) {
$url .= '&';
}
$this->url = $url;
}
/**
* 得到$page的url
* @param $page 页面
* @return string
*/
protected function _get_url($page)
{
if ($this->url === null) {
$this->_set_url();
}
// $lable = strpos('&', $this->url) === FALSE ? '' : '&';
return $this->url . $this->page_name . '=' . $page;
}
/**
* 得到第一页
* @return string
*/
public function first_page($name = '第一页')
{
if ($this->now_page > 5) {
return $this->_get_link('1', $name);
}
return '';
}
/**
* 最后一页
* @param $name
* @return string
*/
public function last_page($name = '最后一页')
{
if ($this->now_page < $this->total_pages - 5) {
return $this->_get_link($this->total_pages, $name);
}
return '';
}
/**
* 上一页
* @return string
*/
public function up_page($name = '上一页')
{
if ($this->now_page != 1) {
return $this->_get_link($this->now_page - 1, $name);
}
return '';
}
/**
* 下一页
* @return string
*/
public function down_page($name = '下一页')
{
if ($this->now_page < $this->total_pages) {
return $this->_get_link($this->now_page + 1, $name);
}
return '';
}
/**
* 分页样式输出
* @param $param
* @return string
*/
public function show($param = 1)
{
if ($this->total_rows < 1) {
return '';
}
$className = 'show_' . $param;
$classNames = get_class_methods($this);
if (in_array($className, $classNames)) {
return $this->$className();
}
return '';
}
protected function show_2()
{
if ($this->total_pages != 1) {
$return = '';
$return .= $this->up_page('<');
for ($i = 1; $i <= $this->total_pages; $i++) {
if ($i == $this->now_page) {
$return .= "<a class='now_page'>$i</a>\n";
} else {
if ($this->now_page - $i >= 4 && $i != 1) {
$return .= "<span class='pageMore'>...</span>\n";
$i = $this->now_page - 3;
} else {
if ($i >= $this->now_page + 5 && $i != $this->total_pages) {
$return .= "<span>...</span>\n";
$i = $this->total_pages;
}
$return .= $this->_get_link($i, $i) . "\n";
}
}
}
$return .= $this->down_page('>');
return $return;
}
}
protected function show_1()
{
$plus = $this->plus;
if ($plus + $this->now_page > $this->total_pages) {
$begin = $this->total_pages - $plus * 2;
} else {
$begin = $this->now_page - $plus;
}
$begin = ($begin >= 1) ? $begin : 1;
$return = '';
$return .= $this->first_page();
$return .= $this->up_page();
for ($i = $begin; $i <= $begin + $plus * 2; $i++) {
if ($i > $this->total_pages) {
break;
}
if ($i == $this->now_page) {
$return .= "<a class='now_page'>$i</a>\n";
} else {
$return .= $this->_get_link($i, $i) . "\n";
}
}
$return .= $this->down_page();
$return .= $this->last_page();
return $return;
}
protected function show_3()
{
$plus = $this->plus;
if ($plus + $this->now_page > $this->total_pages) {
$begin = $this->total_pages - $plus * 2;
} else {
$begin = $this->now_page - $plus;
}
$begin = ($begin >= 1) ? $begin : 1;
$return = '总计 ' . $this->total_rows . ' 个记录分为 ' . $this->total_pages . ' 页, 当前第 ' . $this->now_page . ' 页 ';
$return .= ',每页 ';
$return .= '<input type="text" value="' . $this->list_rows . '" id="pageSize" size="3"> ';
$return .= $this->first_page() . "\n";
$return .= $this->up_page() . "\n";
$return .= $this->down_page() . "\n";
$return .= $this->last_page() . "\n";
$return .= '<select onchange="' . $this->ajax_func_name . '(this.value)" id="gotoPage">';
for ($i = $begin; $i <= $begin + 10; $i++) {
if ($i > $this->total_pages) {
break;
}
if ($i == $this->now_page) {
$return .= '<option selected="true" value="' . $i . '">' . $i . '</option>';
} else {
$return .= '<option value="' . $i . '">' . $i . '</option>';
}
}
$return .= '</select>';
return $return;
}
}
?>
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