分页组件 PHP5+MSSQL

<?

class pagerecordset

{



	private $cn;

	private $rs;

	private $totalpage = 0;

	private $totalrecord = 0;

	private $bpos = 1;

	private $epos = 1;

	private $row = null;

	private $firstpage = 1;

	private $prevpage = 1;

	private $nextpage = 1;

	private $lastpage = 1;

	public $pageindex = 1;

	public $pagerecordcount = 10;



	public function __construct()

	{

		$ip = func_get_arg(0);

		$uid = func_get_arg(1);

		$pwd = func_get_arg(2);

		$this->cn = mssql_connect($ip , $uid , $pwd) or die("Connection creation fail!");

	}



	function __destruct()

	{

	}



	public function fetch($sql)

	{

		$this->rs = mssql_query($sql) or die("Query execution fail!");

		$this->totalrecord = mssql_num_rows($this->rs);

		if ($this->totalrecord == 0)

		{

		}

		else

		{

			$this->totalpage = ceil($this->totalrecord / $this->pagerecordcount);

			$this->firstpage = 1;

			$this->lastpage = $this->totalpage;

			$this->prevpage = $this->pageindex - 1;

			$this->nextpage = $this->pageindex + 1;

			if ($this->prevpage < 1)

			{

				$this->prevpage = $this->lastpage;

			}

			if ($this->nextpage > $this->lastpage)

			{

				$this->nextpage = $this->firstpage;

			}

			$this->bpos = ($this->pageindex - 1) * $this->pagerecordcount;

			$this->epos = $this->bpos + $this->pagerecordcount;

			if ($this->epos > $this->totalrecord)

			{

				$this->epos = $this->totalrecord - $this->bpos + $this->bpos;

			}

		}

		mssql_data_seek($this->rs , $this->bpos) or die("Head locate fail!");

	}



	public function read()

	{

		$returnval = false;

		if ($this->bpos < $this->epos)

		{

			$this->row = mssql_fetch_array($this->rs);

			$this->bpos++;

			$returnval = true;

		}

		return $returnval;

	}



	public function getfield($fieldname)

	{

		$returnval = "";

		$returnval = $this->row[$fieldname];

		return $returnval;

	}



	public function getposition()

	{

		$returnval = -1;

		$returnval = $this->bpos;

		return $returnval;

	}



	private function errmsg($funcbody , $errdescription)

	{

		$returnval = "";

		$returnval += "<div style='padding:5px; background:#ffd700; color:#000; font-family:Verdana; font-size:11px;'>";

		$returnval += " <div>Fundation：<strong>" + $funcbody + "</strong></div>";

		$returnval += " <div>Description：" + $errdescription + "</div>";

		$returnval += "</div>";

		return $returnval;

	}



	public function shownavigation($pagequery , $otherquery)

	{

		$html = "";

		$html .= "<div style=\"text-align:center; padding:5px;\">";

		$html .= " <div>";

		$html .= "  <a href=\"?" . $pagequery . "=" . $this->firstpage . $otherquery . "\" style=\"font-family:Webdings; font-size:12px;\">9</a>";

		$html .= "  <a href=\"?" . $pagequery . "=" . $this->prevpage . $otherquery . "\" style=\"font-family:Webdings; font-size:12px;\">7</a>";

		$html .= "  " . $this->pageindex;

		$html .= "  /";

		$html .= "  " . $this->lastpage;

		$html .= "  <a href=\"?" . $pagequery . "=" . $this->nextpage . $otherquery . "\" style=\"font-family:Webdings; font-size:12px;\">8</a>";

		$html .= "  <a href=\"?".$pagequery."=".$this->lastpage.$otherquery."\" style=\"font-family:Webdings; font-size:12px;\">:</a>";

		$html .= " </div>";

		$html .= "</div>";

		echo($html);

	}



	public function release()

	{

		mssql_free_result($this->rs) or die("Recordset destroy fail!");

		mssql_close($this->cn) or die("Connection close fail!");

	}



}

?>