二个php分页程序代码

PHP分页器制作,自动生成分面页码,JS调用函数,分页的原理大致如下,分页程序有两个非常重要的参数:每页显示几条记录($pagesize)和当前是第几页($page).

有了这两个参数就可以很方便的写出分页程序,我们以MySql数据库作为数据源,在mysql里如果要想取出表内某段特定内容可以使用的 T-SQL语句:select * from table limit offset,rows来实现。这里的offset是记录偏移量,它的计算方法是offset=$pagesize*($page-1)，rows是要显示的记录条数,这里就是$page,也就是说select * from table limit 10,10这条语句的意思是取出表里从第11条记录开始的20条记录.

PHP实例代码如下:

<?php class PageView{      /**页码**/      public $pageNo = 1;      /**页大小**/      public $pageSize = 20;      /**共多少页**/      public $pageCount = 0;      /**总记录数**/      public $totalNum = 0;      /**偏移量,当前页起始行**/      public $offSet = 0;      /**每页数据**/      public $pageData = array ();            /**是否有上一页**/      public $hasPrePage = true;      /**是否有下一页**/      public $hasNextPage = true;            public $pageNoList = array ();            public $jsFunction = 'jsFunction' ;      /**      *      * @param unknown_type $count 总行数      * @param unknown_type $size 分页大小      * @param unknown_type $string      */      public function __construct( $count =0, $size =20, $pageNo =1, $pageData = array (), $jsFunction = 'jsFunction' ){          $this ->totalNum = $count ; //总记录数          $this ->pageSize = $size ; //每页大小          $this ->pageNo = $pageNo ;          //计算总页数          $this ->pageCount = ceil ( $this ->totalNum/ $this ->pageSize);          $this ->pageCount = ( $this ->pageCount<=0)?1: $this ->pageCount;          //检查pageNo          $this ->pageNo = $this ->pageNo == 0 ? 1 : $this ->pageNo;          $this ->pageNo = $this ->pageNo > $this ->pageCount? $this ->pageCount : $this ->pageNo;                    //计算偏移          $this ->offset = ( $this ->pageNo - 1 ) * $this ->pageSize;          //计算是否有上一页下一页          $this ->hasPrePage = $this ->pageNo == 1 ?false:true;          $this ->hasNextPage = $this ->pageNo >= $this ->pageCount ?false:true;                    $this ->pageData = $pageData ;          $this ->jsFunction = $jsFunction ;               }      /**      * 分页算法      * @return      */      private function generatePageList(){          $pageList = array ();          if ( $this ->pageCount <= 9){              for ( $i =0; $i < $this ->pageCount; $i ++){                  array_push ( $pageList , $i +1);             }         } else {              if ( $this ->pageNo <= 4){                  for ( $i =0; $i <5; $i ++){                      array_push ( $pageList , $i +1);                 }                  array_push ( $pageList ,-1);                  array_push ( $pageList , $this ->pageCount);             } else if ( $this ->pageNo > $this ->pageCount - 4){                  array_push ( $pageList ,1);                                    array_push ( $pageList ,-1);                  for ( $i =5; $i >0; $i --){                      array_push ( $pageList , $this ->pageCount - $i +1);                 }             } else if ( $this ->pageNo > 4 && $this ->pageNo <= $this ->pageCount - 4){                  array_push ( $pageList ,1);                  array_push ( $pageList ,-1);                                    array_push ( $pageList , $this ->pageNo -2);                  array_push ( $pageList , $this ->pageNo -1);                  array_push ( $pageList , $this ->pageNo);                  array_push ( $pageList , $this ->pageNo + 1);                  array_push ( $pageList , $this ->pageNo + 2);                                    array_push ( $pageList ,-1);                  array_push ( $pageList , $this ->pageCount);                               }         }          return $pageList ;     }      /***      * 创建分页控件     * @param     * @return String     */      public function echoPageAsDiv(){          $pageList = $this ->generatePageList();                    $pageString = "<div class='pagination'><div class='page-bottom'>" ;                if (! empty empty ( $pageList )){              if ( $this ->pageCount >1){                  if ( $this ->hasPrePage){                      $pageString = $pageString . "<a class='page-next' href=" javascript： " .$this->jsFunction . " ( " . ($this->pageNo-1) . " ) ">上一页</a>" ;                 }                  foreach ( $pageList as $k => $p ){                      if ( $this ->pageNo == $p ){                          $pageString = $pageString . "<span class='page-cur'>" . $this ->pageNo . "</span>" ;                          continue ;                     }                      if ( $p == -1){                          $pageString = $pageString . "<span class='page-break'>...</span>" ;                          continue ;                     }                      $pageString = $pageString . "<a href=" javascript： " .$this->jsFunction . " ( " . $p . " ) ">" . $p . "</a>" ;                 }                                    if ( $this ->hasNextPage){                      $pageString = $pageString . "<a class='page-next' href=" javascript： " .$this->jsFunction . " ( " . ($this->pageNo+1) . " ) ">下一页</a>" ;                 }                               }         }          $pageString = $pageString .( "</div></div>" );          return $pageString ;     } } ?>
css,代码如下:

<style type= "text/css" >  </style>
使用方法,代码如下:

$pageNo = $_GET [ 'pageNo' ];          if ( empty empty ( $pageNo )){              $pageNo = 1;         }          //分页数据          $pageData = News::getNewsPage( $pageNo , $pageSize );         //取得总行数          $count = News::getNewsCount();          //创建分页器          $p = new PageView( $count [ '0' ][ 'TOTAL' ], $pageSize , $pageNo , $pageData ); 　　　　 //生成页码 $pageViewString = $p ->echoPageAsDiv();
下面再介绍一个分页类,代码如下:

<?php     class SubPages{                 private    $each_disNums ; //每页显示的条目数       private    $nums ; //总条目数       private    $current_page ; //当前被选中的页       private    $sub_pages ; //每次显示的页数       private    $pageNums ; //总页数       private    $page_array = array (); //用来构造分页的数组       private    $subPage_link ; //每个分页的链接       private    $subPage_type ; //显示分页的类型        /*      __construct是SubPages的构造函数，用来在创建类的时候自动运行.      @$each_disNums   每页显示的条目数      @nums     总条目数      @current_num     当前被选中的页      @sub_pages       每次显示的页数      @subPage_link    每个分页的链接      @subPage_type    显示分页的类型            当@subPage_type=1的时候为普通分页模式            example：   共4523条记录,每页显示10条,当前第1/453页 [首页] [上页] [下页] [尾页]            当@subPage_type=2的时候为经典分页样式            example：   当前第1/453页 [首页] [上页] 1 2 3 4 5 6 7 8 9 10 [下页] [尾页]      */        function __construct( $each_disNums , $nums , $current_page , $sub_pages , $subPage_link , $subPage_type ){         $this ->each_disNums= intval ( $each_disNums );         $this ->nums= intval ( $nums );          if (! $current_page ){          $this ->current_page=1;         } else {          $this ->current_page= intval ( $current_page );         }         $this ->sub_pages= intval ( $sub_pages );         $this ->pageNums= ceil ( $nums / $each_disNums );         $this ->subPage_link= $subPage_link ;          $this ->show_SubPages( $subPage_type );          //echo $this->pageNums."--".$this->sub_pages;      }                        /*       __destruct析构函数，当类不在使用的时候调用，该函数用来释放资源。      */        function __destruct(){         unset( $each_disNums );         unset( $nums );         unset( $current_page );         unset( $sub_pages );         unset( $pageNums );         unset( $page_array );         unset( $subPage_link );         unset( $subPage_type );        }                /*       show_SubPages函数用在构造函数里面。而且用来判断显示什么样子的分页        */        function show_SubPages( $subPage_type ){          if ( $subPage_type == 1){          $this ->subPageCss1();         } elseif ( $subPage_type == 2){          $this ->subPageCss2();         }        }                        /*       用来给建立分页的数组初始化的函数。      */        function initArray(){          for ( $i =0; $i < $this ->sub_pages; $i ++){          $this ->page_array[ $i ]= $i ;         }          return $this ->page_array;        }                        /*       construct_num_Page该函数使用来构造显示的条目       即使：[1][2][3][4][5][6][7][8][9][10]      */        function construct_num_Page(){          if ( $this ->pageNums < $this ->sub_pages){          $current_array = array ();           for ( $i =0; $i < $this ->pageNums; $i ++){            $current_array [ $i ]= $i +1;          }         } else {          $current_array = $this ->initArray();           if ( $this ->current_page <= 3){            for ( $i =0; $i < count ( $current_array ); $i ++){            $current_array [ $i ]= $i +1;           }          } elseif ( $this ->current_page <= $this ->pageNums && $this ->current_page > $this ->pageNums - $this ->sub_pages + 1 ){            for ( $i =0; $i < count ( $current_array ); $i ++){            $current_array [ $i ]=( $this ->pageNums)-( $this ->sub_pages)+1+ $i ;           }          } else {            for ( $i =0; $i < count ( $current_array ); $i ++){            $current_array [ $i ]= $this ->current_page-2+ $i ;           }          }         }                   return $current_array ;        }                /*      构造普通模式的分页      共4523条记录,每页显示10条,当前第1/453页 [首页] [上页] [下页] [尾页]      */        function subPageCss1(){         $subPageCss1Str = "" ;         $subPageCss1Str .= "共" . $this ->nums. "条记录，" ;         $subPageCss1Str .= "每页显示" . $this ->each_disNums. "条，" ;         $subPageCss1Str .= "当前第" . $this ->current_page. "/" . $this ->pageNums. "页 " ;         if ( $this ->current_page > 1){          $firstPageUrl = $this ->subPage_link. "1" ;          $prewPageUrl = $this ->subPage_link.( $this ->current_page-1);          $subPageCss1Str .= "[<a href='$firstPageUrl'>首页</a>] " ;          $subPageCss1Str .= "[<a href='$prewPageUrl'>上一页</a>] " ;         } else {          $subPageCss1Str .= "[首页] " ;          $subPageCss1Str .= "[上一页] " ;         }                   if ( $this ->current_page < $this ->pageNums){          $lastPageUrl = $this ->subPage_link. $this ->pageNums;          $nextPageUrl = $this ->subPage_link.( $this ->current_page+1);          $subPageCss1Str .= " [<a href='$nextPageUrl'>下一页</a>] " ;          $subPageCss1Str .= "[<a href='$lastPageUrl'>尾页</a>] " ;         } else {          $subPageCss1Str .= "[下一页] " ;          $subPageCss1Str .= "[尾页] " ;         }                   echo $subPageCss1Str ;                 }                        /*      构造经典模式的分页      当前第1/453页 [首页] [上页] 1 2 3 4 5 6 7 8 9 10 [下页] [尾页]      */        function subPageCss2(){         $subPageCss2Str = "" ;         $subPageCss2Str .= "当前第" . $this ->current_page. "/" . $this ->pageNums. "页 " ;                           if ( $this ->current_page > 1){          $firstPageUrl = $this ->subPage_link. "1" ;          $prewPageUrl = $this ->subPage_link.( $this ->current_page-1);          $subPageCss2Str .= "[<a href='$firstPageUrl'>首页</a>] " ;          $subPageCss2Str .= "[<a href='$prewPageUrl'>上一页</a>] " ;         } else {          $subPageCss2Str .= "[首页] " ;          $subPageCss2Str .= "[上一页] " ;         }                  $a = $this ->construct_num_Page();          for ( $i =0; $i < count ( $a ); $i ++){          $s = $a [ $i ];           if ( $s == $this ->current_page ){           $subPageCss2Str .= "[<span style='color:red;font-weight:bold;'>" . $s . "</span>]" ;          } else {           $url = $this ->subPage_link. $s ;           $subPageCss2Str .= "[<a href='$url'>" . $s . "</a>]" ;          }         }      if ( $this ->current_page < $this ->pageNums){          $lastPageUrl = $this ->subPage_link. $this ->pageNums;          $nextPageUrl = $this ->subPage_link.( $this ->current_page+1);          $subPageCss2Str .= " [<a href='$nextPageUrl'>下一页</a>] " ;          $subPageCss2Str .= "[<a href='$lastPageUrl'>尾页</a>] " ;         } else {          $subPageCss2Str .= "[下一页] " ;          $subPageCss2Str .= "[尾页] " ;         }          echo $subPageCss2Str ;        }     }     ?>
调用方法,代码如下:

<?php     require_once ( "SubPages.php" );     //每页显示的条数       $page_size =20;     //总条目数       $nums =1024;     //每次显示的页数       $sub_pages =10;     //得到当前是第几页       $pageCurrent = $_GET [ "p" ];        //if(!$pageCurrent) $pageCurrent=1;               $subPages = new SubPages( $page_size , $nums , $pageCurrent , $sub_pages , "test.php?p=" ,2);     ?>

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更新时间：2022-09-16 阅读：64次