PHP page turning example code_PHP tutorial

Copy code The code is as follows:

class Page
{
private $pageSize;/ /How many lines per page
private $absolutePage;//Current page
private $pageCount;//Total number of pages
private $totalNum;//Total number of lines
private $prePage;//Up One page
private $nextPage; //Next page
private $sqlStr;
private $baseUrl; //URL without GET parameters get transmission URL
function __construct($pagesize,$absolutepage ,$baseurl,$sqlStr)
{
$this->absolutePage = $absolutepage;
$this->pageSize = $pagesize;
$this->baseUrl = $baseurl;
$this->sqlStr = $sqlStr;
}
//Display the main content
public function listinfo()
{
$result = DBHelper::ExecuteCommand($this ->sqlStr);
// $result = mysql_query($this->sqlStr,$conn);
$this->totalNum = mysql_num_rows($result);//Get the result set Number of all rows
$this->pageCount = (int)(($this->totalNum -1)/$this->pageSize)+1; //Calculate how many pages there are in total
if ($this->absolutePage == "" || !is_numeric($this->absolutePage))//If it is the first time the page is loaded, the value of absolutePage must be empty. At this time, we think that the user is the first time When visiting, show him the first page (of course, you can also show him the 5th page if you want)
{
$this->absolutePage = 1;//Show him the first page
}
if($this->absolutePage > $this->pageCount)//If the page number of the requested next page exceeds the total number of pages, we will display the last page
{
$this ->absolutePage = $this->pageCount;//Display the last page
}
if ($this->totalNum > 1 && $this->absolutePage > 1) //If To meet the conditions for displaying the previous page, we let the value of the page number variable of the previous page be equal to the current page (absolutePage) minus one
{
$this->prePage = $this->absolutePage -1;
}
if($this->absolutePage >= 1 && $this->absolutePage < $this->pageCount)//given when the current page is at least 1 and not greater than the total number of pages The next page variable assignment is the current page plus 1
{
$this->nextPage = $this->absolutePage + 1;
}
if (mysql_data_seek($result,($this ->absolutePage -1) * $this->pageSize))//Determine where to start retrieving data in the result set//Determine where to start retrieving data in the result set mysql_data_seek points to the next row
{
include("goodsTemplate.php");
for ($i = 0; $i < $this->pageSize; $i++)
{
if(($info = mysql_fetch_array($ result)))
{
$name = $info['GoodsName'];
$tupian = $info['GoodsPhopo'];
$id = $info['GoodsId'];
$price = $info['GoodsPrice'];
$url = 'detail.php?id='.$id;
$items = str_replace(array('{name}','{ tupian}','{url}','{price}','{id}'),array($name,$tupian,$url,$price,$id),$goodsContent);//str_replace replaces two The second array replaces the first array. The $goodsContent parameter is the object to be replaced.
$cishu++;
echo $items;
if ($cishu % 4 == 0)
{
?>

}
}
}
}
}
//Paging Action function
public function toPage()
{
include('toPageTemplate.php');
if($this->totalNum > 1 && $this->absolutePage > 1 )
{
$this->prePage = $this->absolutePage - 1;
}
if($this->absolutePage >= 1 && $this->absolutePage < $this->pageCount)
{
$this->nextPage = $this->absolutePage + 1;
}
$preUrl = $this->baseUrl." ?absolutePage=$this->prePage";
$nextUrl = $this->baseUrl."?absolutePage=$this->nextPage";
$items = str_replace(array('{totalNum} ','{absolutePage}','{pageCount}','{preUrl}','{nextUrl}'),array($this->totalNum,$this->absolutePage,$this->pageCount, $preUrl,$nextUrl),$toPage);
echo $items;
}
}
?>

http://www.bkjia.com/PHPjc/320414.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/320414.htmlTechArticleCopy the code as follows: ?php class Page { private $pageSize;//How many lines per page private $absolutePage ;//Current page private $pageCount;//Total number of pages private $totalNum;//Total number of rows...