前段时间写的个PHP分页类,适合所有URL形式

2009-03-19 04:11:33 Old Post In WordPress

10 comments

今天没有什么好写的,发个前段时间写的个用于CLBLOG的一个分页类，写的不是很复杂!但是通用性还不错,而且兼容现在流行的各种URL形式.可以自定义分页的变量、每页显示记录数量、显示页数、自定义URL形式。可以强制指定当前页.. 在显示输出上,具有显示重页数、当前页数、页数过多以“...”代替显示并且在页数过多的时候显示第一页和最后一页的链接、具有上一页下一页的功能等等... 截图：

NOTICE:

┃-默认使用的是"page"来代表页的变量  ($flag)
┃-默认没有开启自定义URL地址类型  ($delimiter)
┃-默认在页面上显示10个页数  ($showListNum)
┃-默认没有开启强制指定当前页的功能

介绍几个简单使用方式，更多的使用方式自己稍微看下构造函数或者config函数就会一目了然了。一：最简单的方式，这样适用于URL为简单的QueryString类型的URL,比如：http://intgu.com/?user=cluries&page=4&oh=china

<?php
include 'Pagination.php';
$pagi = new  Pagination(500,20);   //总共有500个记录，每页显示20个记录
//$pagi->config(500,50);
$pagi->pagi();
?>

二：自定义代表页数的变量,适合使用URL为类似的：http://intgu.com/html/category/php/page/2

<?php
include 'Pagination.php';
$pagi = new  Pagination();
 
//总共有500个记录，每页显示20个记录,以page代表分页变量
//显示10个页数,不强制设定当前页,URL中参数的分隔符为'/'
$pagi->config(500,50,'page',10,FALSE,'/'); 
 
//$html = $pagi->getPagi();   //getPagi()方法用于使用了类似与CTE的模板引擎的时候使用
//echo html;
 
$pagi->pagi();
?>

更多的使用方法查看代码构造函数或者config函数 完整代码：

<?php
/*
 * 一个通用的分页类，基本上使用任何URL形式
 * 
 * @author : Cluries <vcommail#gmail.com>
 * @link   : http://intgu.com
 * @version 0.0.1  2009-02-05 (Require PHP version 5.0 or later)
 * 
 * Usage Example Ⅰ :
 * include 'Pagination.php';
 * $pagi = new  Pagination();
 * $pagi->config(500,20);
 * $pagi->pagi();
 * 
 * Usage Example Ⅱ :
 * include 'Pagination.php';
 * $pagi = new  Pagination();
 * $pagi->config(500,20,'pageNumber',false,10,'/');
 * $pagi->pagi();
 * 
 * 
 */
 
class Pagination {
 
	private $config;
 
	function __construct($recordCount = '', $perNumber = '', $flag = 'page',  $showListNum = 10,$nowPage = false, $delimiter = false) {
 
		$this->config = array ();
 
		if ($recordCount != '' && $perNumber != '') {
 
			$this->config ( $recordCount, $perNumber, $flag, $showListNum, $nowPage, $delimiter );
			;
		}
	}
 
	public function config($recordCount, $perNumber, $flag = 'page', $showListNum = 10, $nowPage = false, $delimiter = false) {
 
		if ($recordCount < 0 || $perNumber < 0) {
 
			$this->error ( '参数设置错误，总的记录数和每页数量不能小于0' );
		}
 
		if ($flag == '') {
 
			$this->error ( '参数设置错误，页码标志不能为空' );
		}
 
		if ($showListNum < 1) {
 
			$this->error ( '显示数量不能小于1' );
		}
 
		$this->config ['recordCount'] = intval ( $recordCount );
		$this->config ['perNumber'] = intval ( $perNumber );
		$this->config ['flag'] = trim ( $flag );
		$this->config ['nowPage'] = $nowPage;
		$this->config ['showListNum'] = $showListNum;
		$this->config ['delimiter'] = $delimiter;
 
		return;
	}
 
	public function pagi() {
 
		echo $this->process ();
	}
 
	public function getPagi() {
 
		return $this->process ();
	}
 
	private function process() {
 
		foreach ( $this->config as $v ) {
 
			if ($v === '') {
 
				$this->error ( '请先运行：config()' );
			}
		}
 
		if (! $this->config ['nowPage']) {
 
			if (isset ( $_GET [$this->config ['flag']] )) {
 
				$this->config ['nowPage'] = intval ( $_GET [$this->config ['flag']] );
			} else {
 
				$this->config ['nowPage'] = intval ( $_REQUEST [$this->config ['flag']] );
			}
		}
 
		$pageNum = ceil ( $this->config ['recordCount'] / $this->config ['perNumber'] );
		if ($this->config ['nowPage'] <= 0) {
 
			$this->config ['nowPage'] = 1;
		}
 
		if ($this->config ['nowPage'] > $pageNum) {
 
			$this->config ['nowPage'] = $pageNum;
		}
 
		$start = $this->config ['nowPage'] - floor ( $this->config ['showListNum'] / 2 );
		$start = ($start <= 0) ? 1 : $start;
 
		$end = $start + $this->config ['showListNum'];
		$end = ($end >= $pageNum) ? $pageNum : $end;
 
		if ($pageNum <= $this->config ['showListNum']) {
 
			$start = 1;
			$end = $pageNum;
		}
 
		$html = '<pagi> Page ' . $this->config ['nowPage'] . ' of ' . $pageNum . '</pagi>';
 
		if ($this->config ['nowPage'] > 1) {
 
			$html .= '<a name="nav" href="' . $this->pageNumberReplace ( $this->config ['nowPage'] - 1 ) . '" title="上一页">«</a>';
		} else {
 
			$html .= '<a name="nav">«</a>';
		}
 
		if ($start > 1) {
			$dot = $start - floor ( $this->config ['showListNum'] / 2 );
			$dot = $dot < 1 ? 1 : $dot;
			$html .= '<a href="' . $this->pageNumberReplace ( 1 ) . '">1</a> <a href="' . $this->pageNumberReplace ( $dot ) . '"> ... </a>';
		}
 
		for($i = $start; $i <= $end; $i ++) {
			if ($i == $this->config ['nowPage']) {
				$html .= '<a name="nowPage">' . $i . '</a>';
			} else {
 
				$html .= '<a href="' . $this->pageNumberReplace ( $i ) . '">' . $i . '</a>';
			}
		}
 
		if ($end < $pageNum) {
			$dot = $end + floor ( $this->config ['showListNum'] / 2 );
			$dot = $dot > $pageNum ? $pageNum : $dot;
			$html .= '<a href="' . $this->pageNumberReplace ( $dot ) . '"> ... </a><a href="' . $this->pageNumberReplace ( $pageNum ) . '">' . $pageNum . '</a>';
		}
 
		if ($this->config ['nowPage'] < $pageNum) {
 
			$html .= '<a name="nav" href="' . $this->pageNumberReplace ( $this->config ['nowPage'] + 1 ) . '" title="下一页">»</a>';
		} else {
 
			$html .= '<a name="nav">»</a>';
		}
 
		return $html;
 
	}
 
	private function pageNumberReplace($number) {
 
 
		if (! $this->config ['delimiter']) {
 
			return $this->pageNumberReplaceDefault ( $number );
		}
 
		return $this->pageNumberReplaceDelimiter ( $number );
	}
 
	private function pageNumberReplaceDefault($number) {
 
		$url = $_SERVER ['REQUEST_URI'];
		$pattern = '/([\?&]' . $this->parseRegStr ( $this->config ['flag'] ) . '=)\w+/i';
 
		if (preg_match ( $pattern, $url )) {
 
			$url = preg_replace ( $pattern, "\${1}" . $number, $url );
			return $url;
		} else if (preg_match ( '/(\.php)?\?/i', $url )) {
 
			return $url . '&' . $this->config ['flag'] . '=' . $number;
		} else {
 
			return $url . '?' . $this->config ['flag'] . '=' . $number;
		}
	}
 
	private function pageNumberReplaceDelimiter($number) {
 
		$url = $_SERVER ['REQUEST_URI'];
		$delimiter = $this->parseRegStr ( $this->config ['delimiter'] );
		$pattern = '/(' . $delimiter . $this->parseRegStr ( $this->config ['flag'] ) . $delimiter . ')\w+/i';
 
		if (preg_match ( $pattern, $url )) {
 
			return preg_replace ( $pattern, "\${1}" . $number, $url );
			;
		} else {
			$pattern = '/' . $delimiter . '$/i';
 
			if (preg_match ( $pattern, $url )) {
				return $url . $this->config ['flag'] . $this->config ['delimiter'] . $number;
			}
 
			return $url . $this->config ['delimiter'] . $this->config ['flag'] . $this->config ['delimiter'] . $number;
		}
 
	}
 
	private function parseRegStr($str) {
 
		$als = array ('/', '(', '[', '{', ',', '$', '^', '|', '?', '+', '*', '.', '}', ']', ')' );
 
		$new_als = array ('\/', '\(', '\[', '\{', '\,', '\$', '\^', '\|', '\?', '\+', '\*', '\.', '\}', '\]', '\)' );
 
		return str_replace ( $als, $new_als, $str );
	}
 
	private function error($e) {
 
		$e = '<strong>Error:</strong>' . $e;
		echo $e;
		exit ();
	}
 
	function __destruct() {
 
	}
}
 
?>