php分页类

<?php
/*Created By RexLee 分页类
**PHP file Page.php 2012-8-13
*/
header('charset:utf-8');
class Page {
	public  $quote_url='#?=';//当前引用页,请将你的当前引用页面填充到#处，例如getPage.php
	public  $tail_num=5;//分页栏显示页面链接数
	public  $haveTail=false;//是否开启尾部导航
	private $_2DArray;
	private $length;
	private $first_page=1;
	private $last_page;
	
	//public  $help="示例：<br />\$page=new Page(\$_2DArray));<br />\$page-&gt;\$quote_url='myPage.php?=';<br />\$page-&gt;\$tail_num=10;<br />\$page-&gt;auto(11, 6);<br />关于\$_2DArray是一个二维数组，可以是：<pre style=\"font-style:italic;font-weight:bold\"> Array([0] => Array([0] => 1,[Id] => 1,[1] => e,[word] => e) , [1] => Array([0] => 2,[Id] => 2,[1] => x,[word] => x))</pre>也可以是：<pre style=\"font-style:italic; font-weight:bold\"> Array([0] => Array([0] => 1,[1] => e) , [1] => Array([0] => 2,[1] => x))</pre>不符合规则的数组将会报错。若是MySQL数据库中取值转为数组，建议与我写的MySQL数据库配合使用。<br />说明：<br />可设定参数：<br /><pre style=\"font-style:italic;font-weight:bold\">public  \$quote_url='#?=';//当前引用页,请将你的当前引用页面填充到#处，例如getPage.php\npublic  \$tail_num=5;//分页栏显示页面链接数</pre>\n\$page->auto(\$p, \$rpp)<br />其中\$p是所要获取的页码，即获取第\$p页，\$rpp（即record per page）是每页显示数据条数。<br><em style=\"font-size:12px;font-style:italic;font-weight:bold;float:right;\">李俊[RexLee] 开发</em>";
	
	public function __construct($_2DArray){
		$this->_2DArray=$_2DArray;
		$this->get_length();
	}
	
	private function get_length(){
		$i=0;
		foreach ($this->_2DArray as $v){
			$i++;
		}
		$this->length = $i;	
	}
	
	private function get($star,$end) {
		echo '<table id="Page_table">';
		echo '<caption id="Page_cap"></caption>';
		for ($i=$star-1 ;$i<$end; $i++) {
			$row = $this->_2DArray[$i];
			echo '<tr>';
			$j=0;
			foreach ($row as $value) {
				$j++;
				if($j%2==0)
				echo "<td>{$value}</td>";
			}
			echo '</tr>';
		};
		echo '</table>';
	}
	
	private function get_single($star,$end) {
		echo '<table id="Page_table">';
		echo '<caption id="Page_cap"></caption>';
		for ($i=$star-1 ;$i<$end; $i++) {
			$row = $this->_2DArray[$i];
			echo '<tr>';
			$j=0;
			foreach ($row as $value) {//单值，没有重复的
				echo "<td>{$value}</td>";
			}
			echo '</tr>';
		};
		echo '</table>';
	}
	
	private function draw_tail($current_page){//画表尾分页
		$half=ceil($this->tail_num/2);//分页移动中点
		$begin=$current_page-$half;//$begin开始点
		if ($begin<=0) {$begin=1;}
		$over=$begin+$this->tail_num-1;//结束点
		$back=$current_page-1;//前一页
		$next=$current_page+1;//后一页
		//画分页span
		echo '<span>';
		//BackPage
		if ($current_page==$this->first_page) {
			echo "<a id=\"Page_back\"></a>&nbsp";
		}else{
			echo "<a id=\"Page_back\" href=\"{$this->quote_url}{$back}\"><<</a>&nbsp";
		}
		
		for ($i=$begin; $i <= $over; $i++) {
			if ($i>$this->last_page) {
				;//页码大于最后一页页码，不予显示
			}else{
				if ($i!=$current_page) {
					echo "<a href=\"{$this->quote_url}{$i}\">";
				}
				if ($i==$current_page) {
					echo '<a id="Page_current">',$i,'</a>';
				}else{
					echo $i;
				}
				if ($i!=$current_page) {
					echo '</a>';
				}
				echo '&nbsp';
			}	
		}
		//NextPage
		if ($current_page==$this->last_page) {
			echo "<a id=\"Page_next\"></a>";
		}else{
			echo "<a id=\"Page_next\" href=\"{$this->quote_url}{$next}\">>></a>";
		}
		echo '</span>';
	}
	
	public function auto($p,$rpp) {//$p is page. $rpp is record per page	分页方法
		//参数检测
		$p=floor($p);//整数化
		if ($p<=0) {$p=1;}//正数化
		//计算$start,$end
		$start=1+($p-1)*$rpp;
		$end=$p*$rpp;
		//$total_page总页数
		$total_page=ceil($this->length/$rpp);
		//最后一页设定
		$this->last_page=$total_page;
		//超页码约束
		if($p>$this->last_page){
			$p=$this->last_page;
			$start=1+($p-1)*$rpp;
			$end=$p*$rpp;
		}
		//画表
		if (current(current(array_count_values(current($this->_2DArray))))==1) {//single
			$this->get_single($start, $end);
		}else if (current(array_count_values(current($this->_2DArray)))==2){//double
			$this->get($start, $end);
		}else {
			echo '请重整你的数组...';
		}		
		//画分页
		if ($this->haveTail) {
			$this->draw_tail($p);
		}
	}	
};




///////////////////////////Example///////////////////////////////////////////////////

// $search=new MySQL('localhost', 'root', 'lijun');
// $search->opendb('demo', 'utf8');
// $arr=$search->to2DArray($search->query('select * from test'));
// $page=new Page($arr);
// $page->auto(1, 6);
//echo $page->help;//查看帮助信息

?>