php sqlite分页。

操作数据库文件使用的是上一个操作类。可以参考上一篇文章。本人文采很差，废话不说，直接上代码：

<meta charset='utf-8'>
<?php 
class SqlitePage{
	public function __construct()
	{	
		$this->table_name='';
		$this->tj='';
		$this->page_size='';
		$this->current_page='';
		$this->total_page='';
		include_once 'sqlite_db.php';
		$this->db=new SqliteDB();//可以调用他的操作方法了
	}

	function entrance($table_name,$page_size,$tj='')//sql中不包含limit   page_size为每页显示条数
	{
		// 首先获取当前页
		// sql = "select * from tab where "+条件+" order by "+排序+" limit "+要显示多少条记录+" offset "+跳过多少条记录;
		$this->page_size=$page_size;
		$this->table_name=$table_name;
		$this->tj=$tj;
		$this->total_page=ceil($this->db->total($this->table_name,$this->tj)/$this->page_size);

		if (!isset($_GET['page'])) {
			$this->current_page=1;//如果没有page，则设置为默认第一页
		}
		else{
			$this->current_page=$_GET['page'];
		}

		if ($this->current_page>$this->total_page) {//当当前页数目大于总页数，则设置当前页数为总页数
			$this->current_page=$this->total_page;
		}
		if ($this->current_page<1) {//当当前页数目大于总页数，则设置当前页数为总页数
			$this->current_page=1;
		}

		$tj=$this->tj.' limit '.$this->page_size.' offset '.($this->current_page-1)*$this->page_size;
		$result=$this->db->query($this->table_name,$tj);

		return $result;
		
	}
	function page_bar()
	{
		$old_url = $_SERVER["REQUEST_URI"]; 
		$check = strpos($old_url, '?'); 
		$pre_urls='test';
		if ($check) {//如果urls中有？
			if(substr($old_url, $check+1) == '') 
			{ //有问号，但是后面没有跟任何参数
				$first_urls=$old_url.'page=1';//首页
				$pre_urls=$old_url.'page='.($this->current_page-1);//上一页;
				$next_urls=$old_url.'page='.($this->current_page+1);//下一页;
				$end_urls=$old_url.'page='.$this->total_page;//末页
			} 
			else {//有问号，并且有参数
				if (isset($_GET['page'])) {//如果参数中包含page参数，则注销这个参数
					unset($_GET['page']);
					$old_url='http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].'?'.http_build_query($_GET);
				}
				$first_urls=$old_url.'&page=1';//首页
				$pre_urls=$old_url.'&page='.($this->current_page-1);//上一页;
				$next_urls=$old_url.'&page='.($this->current_page+1);//下一页;
				$end_urls=$old_url.'&page='.$this->total_page;//末页
			}
		}
		else{// 如果没有问号(也就是说后面没有任何参数，则直接跟)
			$first_urls=$old_url.'?page=1';
			$first_urls=$old_url.'?page=1';//首页
			$pre_urls=$old_url.'?page='.($this->current_page-1);//上一页;
			$next_urls=$old_url.'?page='.($this->current_page+1);//下一页;
			$end_urls=$old_url.'?page='.$this->total_page;//末页
		}		
		// echo $this->table_name.'table_name';
			
		return '
		<div class="page">
			<a>【共'.$this->total_page.'页，第'.$this->current_page.'页】</a>
			<a href="'.$first_urls.'">首页</a>
			<a href="'.$pre_urls.'">上一页</a>
			<a href="'.$next_urls.'">下一页</a>
			<a href="'.$end_urls.'">末页</a>
		</div>
		';
	}
	


	public function get_total_page()
	{	
		return ceil($this->total_record/$this->page_size);
	}
}

// $page=new PrePage();
// $res=$page->entrance('log',10);
// echo "<hr />";
// foreach ($res as $key => $row) {
// 	echo $row['urls'].'<br />';
// }


// echo $page->page_bar();
?>