php通用分页类代码实例

php教程通用分页类代码

*/
class dividepage  //分页类
{
 private $page ; //当前页
 private $total ; //总的记录数
 private $pagesize;  //每页的记录数
 private $prepage ;  //前一页
 private $nextpage; //后一页
 private $lastpage ; //最后一页
 private $url;   //url
 private $start; //当页显示记录数开始条数
 private $endp; //当页显示记录数结束条数
 private $first; //查询开始数

//构造函数
 public function __construct($total,$pagesize,$url)
 {
  $this->total = intval($total);
  $this->pagesize = intval($pagesize);
  $this->url = $url;
  $this->init();
 }

//初始化分页信息
 public function init()
 {
  $parse_url = parse_url($this->url);
  //print_r($parse_url);
  $url_query = $parse_url['query'];
  if(empty($url_query))
  {
   $this->page = 1;
   $this->url = $this->url.'?page=';
  }
  else
  {
   preg_match("/(^|&)page=(.*)(&|$)/ui",$url_query,$temp);
   $this->page = intval($temp[2]);
   $this->url=preg_replace("/page=(.*)/","page=",$this->url);
  }

$this->lastpage = ceil($this->total/$this->pagesize) ? ceil($this->total/$this->pagesize) :1 ;
  //最后一页的页码,总数/每页数向上取整,如果总数为0,则最后一页为第一页.
  $this->page = min($this->lastpage,$this->page)>0 ? min($this->lastpage,$this->page) :1 ;
  //当前页大于最后一页,则取最后一页为当前页,不大于0,则取1为当前页.
  $this->first = ($this->page - 1)*$this->pagesize ; //计算sql查询语句起始位置
  $this->prepage = $this->page-1 ;                       //前一页
  $this->nextpage = $this->page+1 ;      //后一页
  $this->start = $this->total?$this->first +1:0;  //当页记录开始编号
  $this->endp = min($this->total,$this->page*$this->pagesize);//当页记录结束编号
 }

public function getpageinfo()  //取得当前页基本信息,如:显示第 1-5 条记录，共 9 条记录。
 {
  return '<span class="pageinfostyle">显示第<span class = "numberstyle">'.$this->start.'-'.$this->endp.'</span>条记录，共<span class = "numberstyle">'.$this->total.'</span>条记录。</span>';
 }

public function getpagenav()//取得分页导航如:首页 上一页 下一页 尾页
 {
  $nav = "";
  if($this->lastpage == 1)
  {
   return $nav;
   break;
  }
  $nav = '<a href ="'.$this->url.'1" class = "navpagestyle" >首页</a>';
  if($this->prepage)
  {
   $nav.= '<a href = "'.$this->url.$this->prepage.'" class = "navpagestyle">上一页</a>';
  }
  else
  {
   $nav.= '<a  class = "navpagestyle">上一页</a>';
  }

if($this->nextpage <=$this->lastpage)
  {
   $nav.= '<a href = "'.$this->url.$this->nextpage.'" class = "navpagestyle">下一页</a> ';
  }
  else
  {
   $nav.= '<a class = "navpagestyle">下一页</a>';
  }
  $nav.= '<a href = "'.$this->url.$this->lastpage.'" class = "navpagestyle" >尾页</a>';
  return $nav;
 }

public function getjumpnav()  //下拉跳转分页
 {
  $nav = '<span class = "pageinfostyle">到第<select name= "jumpnav" size="1" class = "jumpnav" onchange ='window.location = "'.$this->url.'"+this.value'>'."n";
  for($i=1 ; $i<=$this->lastpage ; $i++)
  {
   if($i==$this->page)
   {
    $nav.= '<option value ="'.$i.'" selected>'.$i.'</option>'."n";
   }
   else
   {
    $nav.='<option value = "'.$i.'">'.$i.'</option>'."n";
   }

}
  $nav.='</select>页，共<span class= "numberstyle">'.$this->lastpage.'</span>页</span>';
  return $nav;
 }

public function getlimit()
 {
  return $this->first.",".$this->pagesize;
 }

public function getallnav()  //获取导航
 {
 return $this->getpageinfo().$this->getpagenav().$this->getjumpnav();
 }
}

//使用实例:
$sql1 = mysql教程_query("select * from sun_message");
$total=mysql_num_rows($sql1);//查询到的数据的总条数
$pagesize = 5;//每页显示的记录条数
$url = $_server['request_uri'];//请求的uri

$pageclass = new dividepage($total, $pagesize,$url); //创建分页类，(类能自动初始化)
$limit =$pageclass->getlimit();//取得当前页要显示的记录开始序号和每页显示条数，如：0, 5(显示从0开始的5条记录)
echo $dividepageclass->getallpagenav();//显示所有分页导航条，如：显示第11-13条记录，共13条记录。首页 上一页 下一页 尾页 到第 1 页，共 3 页

$sql2 = "select * from sun_message order by mid desc limit {$limit}"; //分页内容输出
$result=mysql_query($sql);
while($row=mysql_fetch_array($result))
{
 echo "<hr><b>".$row[title]." | ".$row[author];
}