PHP通用分页（Pager）类

三种不同展示方式 附上style~

1. 效果图1

2.效果图2 

3. 效果图3

4. 分页类主体

<?php
/**
 * PHP通用分页类
 *
 * 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 Pager {
	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;

	/**
	 * 构造函数
	 *
	 * @param unknown_type $data
	 */
	public function __construct($data = array()) {
		$this->total_rows = $data[‘total_rows‘];

		$this->parameter = !empty($data[‘parameter‘]) ? $data[‘parameter‘] : ‘‘;
		$this->list_rows = !empty($data[‘list_rows‘]) && $data[‘list_rows‘] <= 100 ? $data[‘list_rows‘] : 15;
		$this->total_pages = ceil($this->total_rows / $this->list_rows);
		$this->page_name = !empty($data[‘page_name‘]) ? $data[‘page_name‘] : ‘page‘;
		$this->ajax_func_name = !empty($data[‘ajax_func_name‘]) ? $data[‘ajax_func_name‘] : ‘‘;

		$this->method = !empty($data[‘method‘]) ? $data[‘method‘] : ‘‘;

		/* 当前页面 */
		if (!empty($data[‘now_page‘])) {
			$this->now_page = intval($data[‘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>‘ . "
";
				break;

			case ‘html‘ :
				$url = str_replace(‘?‘, $page, $this->parameter);
				return ‘<a href="‘ . $url . ‘">‘ . $text . ‘</a>‘ . "
";
				break;

			default :
				return ‘<a href="‘ . $this->_get_url($page) . ‘">‘ . $text . ‘</a>‘ . "
";
				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>
";
				} else {
					if ($this->now_page - $i >= 4 && $i != 1) {
						$return .= "<span class=‘pageMore‘>...</span>
";
						$i = $this->now_page - 3;
					} else {
						if ($i >= $this->now_page + 5 && $i != $this->total_pages) {
							$return .= "<span>...</span>
";
							$i = $this->total_pages;
						}
						$return .= $this->_get_link($i, $i) . "
";
					}
				}
			}
			$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>
";
			} else {
				$return .= $this->_get_link($i, $i) . "
";
			}
		}
		$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() . "
";
		$return .= $this->up_page() . "
";
		$return .= $this->down_page() . "
";
		$return .= $this->last_page() . "
";
		$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;
	}
}

?>

5.使用方法

###处理html静态化页面分页的情况###
# method 处理环境 设置为 html
# parameter 为静态页面参数  xxx.com/20-0-0-0-40-?.html 注意问号
# ?问号的位置会自动替换为去向页码
# now_page 当前页面(静态页面获取不到当前页面所以只有你传入)
$params = array(
			‘total_rows‘=>100, #(必须)
			‘method‘    =>‘html‘, #(必须)
			‘parameter‘ =>‘xxx.com/20-0-0-0-40-?.html‘,  #(必须)
			‘now_page‘  =>$_GET[‘p‘],  #(必须)
			‘list_rows‘ =>10, #(可选) 默认为15
);
$page = new Pager($params);
   echo  $page->show(1);
   #<a href="xxx.com/20-0-0-0-40-2.html">2</a>

###处理ajax分页的情况###
# method 处理环境 设置为 ajax
# ajax_func_name ajax分页跳转页面的javascript方法
# parameter    ajax_func_name后面的附带参数 默认为空
# now_page 不到当前页面所以只有你传入
$params = array(
			‘total_rows‘=>100,
			‘method‘    =>‘ajax‘,
			‘ajax_func_name‘ =>‘goToPage‘,
			‘now_page‘  =>1,
			#‘parameter‘ =>"‘jiong‘,‘username‘",
);
$page = new Pager($params);
   echo  $page->show(1);
#<a href="javascript:void(0)" onclick="goToPage(‘7‘)">7</a>
#添加了parameter<a href="javascript:void(0)" onclick="goToPage(‘6‘,‘jiong‘,‘username‘)">6</a>