简单的php分页类

时间：2015-01-23 来源：西部数据作者：西部数据

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<?php

//-------------------------------------------------------------------------

//使用方法

  //测试时还需要一张表  至少出现字段 announceID,announceContent

  //include db.php

$db_host='localhost';

$db_user='username';

$db_password='password';

$db_name='konwu';

$db_prefix = 'konwu_';

  Global $db_prefix;

  $conn=@mysql_connect($db_host,$db_user,$db_password);

  // utf-8 是默认设置即使没有下面的一行也会默认 UTF-8

  // 但是MYSQL数据库的默认是LATIN 拉丁字符

  // 最好设置成 GBK UTF-8包含GBK 包含 LATIN

  //网页用UTF-8 显示 GBK 没关系但如果 MYSQL写入时用UTF8有乱码风险，因为MYSQL安装时默认LATIN ，最好 SET GBK

  mysql_query("SET NAMES 'UTF8'");

  mysql_select_db($db_name,$conn) or die ('none DB');

  //set page

      //@param set

   $errorURL = 'http://localhost:8080/htmls/error/index.html';

   $result   = mysql_query("SELECT * FROM konwu_messageannounce");

   $touNUM   = mysql_num_rows($result);

   $config   = array('DB_PREFIX'=>'konwu_','DB'=>'messageannounce','PER_NUM'=>10,'TOU_NUM'=>$touNUM,'ERROR_URL'=>$errorURL,'NUM_PAGE'=>'p');

   // use class

   $pages    = new Pages;

   $getPage  = $pages->resultNUM($config);//

//------------------------------------

  class Pages{

    public static $perNUM;//每一页多少条

    public static $touNUM;//总共多少条

    public static $pageNUM;//总页数

    public static $tables;//表名

    public static $errorURL;// index URL

    public static $numPage;//页面参数的标识 ,

    function getInt($config=array()){

      $this->tables    = $config['DB_PREFIX'].$config['DB'] ? $config['DB_PREFIX'].$config['DB'] : 'konwu_messageannounce';

      $this->perNUM    = $config['PER_NUM'] ? $config['PER_NUM'] : 10;

      $this->touNUM    = $config['TOU_NUM'] ? $config['TOU_NUM'] : 50;

      $this->pageNUM   = ceil($this->touNUM/$this->perNUM);

      $this->errorURL  = $config['ERROR_URL'] ? $config['ERROR_URL'] : 'http://www.konwu.com';

      $this->numPage   = $config['NUM_PAGE'] ? $config['NUM_PAGE'] : 'page';

    }



    function getNUM(){//get num 得到当前页面的值

      if(isset($_GET[$this->numPage]) && !emptyempty($_GET[$this->numPage])){

        $str = $_GET[$this->numPage];

      }else{

        $str = 'wrong';

      }

      return $str;

    }



    function getError(){

      //return $str;

      header('location: '.$this->errorURL);

    }



    //$_GET['pageNUM'] 第几页,必须要是数字整数，必须要 >0 ,必须 <=$pageNUM

    function isNUM(){//check num

     $str = self::getNUM();

     if($str != 'wrong'){

       if(ctype_digit($str)){

         $numPage = $str;

       }else{

         self::getError();

       }

     }else{

       self::getError();

     }

     return $numPage;

    }

    function getSelect(){

      $sql = 'SELECT * FROM '.$this->tables.' ORDER BY announceID DESC';

      return $sql;

    }



    function getSelectResult(){

     $sql = self::getSelect();

     $result = mysql_query($sql);

     return $result;

    }



    function getStartNUM(){

      $nowPage = self::isNUM();

      $perNUM = $this->perNUM;

      $startNUM = $nowPage-1;

      $startNUM = $startNUM*$perNUM;

      $startNUM = $startNUM+1;

      return $startNUM;

    }



    function getLastNUM(){

      $nowPage = self::isNUM();

      $perNUM = $this->perNUM;

      $lastNUM = $nowPage*$perNUM;

      return $lastNUM;

    }



    function resultNUM($config){

      self::getInt($config);

      $result = self::getSelectResult();

      $startNUM = self::getStartNUM();

      $lastNUM = self::getLastNUM();

      $mynum = 1;

      $allResult = '';

      while($re=mysql_fetch_array($result)){

        if($mynum>=$startNUM && $mynum<=$lastNUM){

          $announceID   = $re['announceID'];

          $singleResult = $re['announceContent'];

          $singleResult = mb_substr($singleResult,0,50,'utf-8');

          $lastPage     = self::lastPage();

          $nextPage     = self::nextPage();

          $beginPage    = self::beginPage();

          $endPage      = self::endPage();

          $getFivePage  = self::getFivePage();

          $singleResult = '

                            <p>'.$singleResult.'…  <a href="moreInfoCon'.$announceID.'.html">详细</a></p>

                          ';

          $allResult = $allResult.$singleResult;

        }

   //--------------------------------------------------------------

        $mynum++;

        //----------------------------

        if($mynum>$lastNUM){

          $resultPage = '<div class="pagination">

      '.$beginPage.'

      '.$lastPage.'

      '.$getFivePage.'

      '.$nextPage.'

      '.$endPage.'

      </div>';

          $allResult = $allResult.$resultPage;

          return $allResult;

      }

      //-----------------------------

      }

      $resultPage = '<div class="pagination">

      '.$beginPage.'

      '.$lastPage.'

      '.$getFivePage.'

      '.$nextPage.'

      '.$endPage.'

      </div>';

      $allResult  = $allResult.'<br><br>'.$resultPage;

      return $allResult;

    }



    //next page下一页

    function nextPage(){

     $nowPage = self::isNUM();

     $pageNUM = $this->pageNUM;

     if($nowPage>=$pageNUM){

       $nextPage = '';

     }else{

       $nextPage = $nowPage+1;

       $nextPage = '<a href="moreInfo.html?'.$this->numPage.'='.$nextPage.'" title="Next Page">下一页 »</a>';

     }

     return $nextPage;//得到参数值

    }



    //lastPage 上一页

    function lastPage(){

      $nowPage = self::isNUM();

      if($nowPage>=2){

        $lastPage = $nowPage-1;

        $lastPage = '<a href="moreInfo.html?'.$this->numPage.'='.$lastPage.'" title="Previous Page">« 上一页</a>';

      }else{

        $lastPage = '';

      }

      return $lastPage;

    }



    //第一页，最后一页，当前页左右各两页共五页

    function endPage(){

      $pageNUM = $this->pageNUM;

      $endPage = '<a href="moreInfo.html?'.$this->numPage.'='.$pageNUM.'" title="Last Page">最后一页 »</a>';

      return $endPage;

    }



    function beginPage(){

      $beginPage = '<a href="moreInfo.html?'.$this->numPage.'=1" title="First Page">« 第一页</a>';

      return $beginPage;

    }



    function getFivePage(){

      $nowPage = self::isNUM();//当前页面

      $pageNUM = $this->pageNUM;//总页数

      if($pageNUM<=5){

        $NUM = 1;

        $getNUM = '';

        while($pageNUM>=$NUM){

          $nums = '<a href="moreInfo.html?'.$this->numPage.'='.$NUM.'" class="number" title="'.$NUM.'">'.$NUM.'</a>';

          $getNUM = $getNUM.$nums;

          $NUM++;

        }

        $getFivePage = $getNUM;

        return $getFivePage;

      }else{//>5

        if($nowPage == 1){

          $getNUM = '

                     <a href="moreInfo.html?'.$this->numPage.'=1" class="number current" title="1">1</a>

                     <a href="moreInfo.html?'.$this->numPage.'=2" class="number" title="2">2</a>

                     <a href="moreInfo.html?'.$this->numPage.'=3" class="number" title="3">3</a>

                     <a href="moreInfo.html?'.$this->numPage.'=4" class="number" title="4">4</a>

                     <a href="moreInfo.html?'.$this->numPage.'=5" class="number" title="5">5</a>

                    ';

        }elseif($nowPage == 2){

          $getNUM = '

                     <a href="moreInfo.html?'.$this->numPage.'=1" class="number" title="1">1</a>

                     <a href="moreInfo.html?'.$this->numPage.'=2" class="number current" title="2">2</a>

                     <a href="moreInfo.html?'.$this->numPage.'=3" class="number" title="3">3</a>

                     <a href="moreInfo.html?'.$this->numPage.'=4" class="number" title="4">4</a>

                     <a href="moreInfo.html?'.$this->numPage.'=5" class="number" title="5">5</a>

                    ';

        }elseif($nowPage == ($pageNUM-1)){//-2位置

          $getNUM = '

                     <a href="moreInfo.html?'.$this->numPage.'='.($pageNUM-4).'" class="number" title="'.($pageNUM-4).'">'.($pageNUM-4).'</a>

                     <a href="moreInfo.html?'.$this->numPage.'='.($pageNUM-3).'" class="number" title="'.($pageNUM-3).'">'.($pageNUM-3).'</a>

                     <a href="moreInfo.html?'.$this->numPage.'='.($pageNUM-2).'" class="number" title="'.($pageNUM-2).'">'.($pageNUM-2).'</a>

                     <a href="moreInfo.html?'.$this->numPage.'='.($pageNUM-1).'" class="number current" title="'.($pageNUM-1).'">'.($pageNUM-1).'</a>

                     <a href="moreInfo.html?'.$this->numPage.'='.$pageNUM.'" class="number" title="'.$pageNUM.'">'.$pageNUM.'</a>

                    ';

        }elseif($nowPage == $pageNUM){//-1位置

          $getNUM = '

                     <a href="moreInfo.html?'.$this->numPage.'='.($nowPage-4).'" class="number" title="'.($nowPage-4).'">'.($nowPage-4).'</a>

                     <a href="moreInfo.html?'.$this->numPage.'='.($nowPage-3).'" class="number" title="'.($nowPage-3).'">'.($nowPage-3).'</a>

                     <a href="moreInfo.html?'.$this->numPage.'='.($nowPage-2).'" class="number" title="'.($nowPage-2).'">'.($nowPage-2).'</a>

                     <a href="moreInfo.html?'.$this->numPage.'='.($nowPage-1).'" class="number" title="'.($nowPage-1).'">'.($nowPage-1).'</a>

                     <a href="moreInfo.html?'.$this->numPage.'='.$nowPage.'" class="number current" title="'.$nowPage.'">'.$nowPage.'</a>

                    ';

        }elseif(2<$nowPage && $nowPage<($pageNUM-1)){//2位置和-2位置之间

          $getNUM = '

                     <a href="moreInfo.html?'.$this->numPage.'='.($nowPage-2).'" class="number" title="'.($nowPage-2).'">'.($nowPage-2).'</a>

                     <a href="moreInfo.html?'.$this->numPage.'='.($nowPage-1).'" class="number" title="'.($nowPage-1).'">'.($nowPage-1).'</a>

                     <a href="moreInfo.html?'.$this->numPage.'='.$nowPage.'" class="number current" title="'.$nowPage.'">'.$nowPage.'</a>

                     <a href="moreInfo.html?'.$this->numPage.'='.($nowPage+1).'" class="number" title="'.($nowPage+1).'">'.($nowPage+1).'</a>

                     <a href="moreInfo.html?'.$this->numPage.'='.($nowPage+2).'" class="number" title="'.($nowPage+2).'">'.($nowPage+2).'</a>

                    ';

        }else{

          self::getError();

        }



      }

      $getFivePage = $getNUM;

      return $getFivePage;

    }



//----------------------------------

  }

?>