php分页类

    <?php                 class Page {             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 $subPage_link; //每个分页的链接             /**             *             * __construct是SubPages的构造函数，用来在创建类的时候自动运行.             * @$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 Page($each_disNums, $nums, $current_page, $sub_pages) {                 $this->each_disNums = intval($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);                 $this->subPage_link =$_SERVER['PHP_SELF']."?page=";;             }             /**             * 照顾低版本             */             /*function __construct($each_disNums, $nums, $current_page, $sub_pages, $subPage_linke) {                $this->Page($each_disNums, $nums, $current_page, $sub_pages, $subPage_link);            }        */            /*             __destruct析构函数，当类不在使用的时候调用，该函数用来释放资源。            */             function __destruct() {                 unset ($each_disNums);                 unset ($nums);                 unset ($current_page);                 unset ($sub_pages);                 unset ($pageNums);                 unset ($page_array);                 unset ($subPage_link);             }                     /*             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] ";                 }                         return $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] ";                 }                 return $subPageCss2Str;             }         }                         //测试一下，看看两种不同效果                $current_page=isset($_GET['page'])?intval($_GET['page']):1;//获取用户GET提交的page，如果没有就默         $t = new Page(10, 100, $current_page, 5);         echo $t->subPageCss2();         echo "<br>";         echo $t->subPageCss1();         ?>