网页的分页下标生成代码（PHP后端方法）

/** * * @param $page 页码（1至正无穷） * @param $num 数据中多上行为一页 * @param $rows 数据的总行数 * @param $length 下标的最大长度 * @return array */ public function PageDate($page, $num , $rows , $length){ //初始化数据 $MaxPage = 0; //最大页码 $MinPage = 0; //最小页码 $ServerPage = 0; //下拉框中显示的页码 $PageData = array(); //全部的页码集合（用户下拉框选择） $PageShowData = array(); //用于显示下标的页码集合 $page = intval($page); if($rows == 0){ return $data = array( 'page' => $page, 'MaxPage' => $MaxPage, 'MinPage' => $MinPage, 'ServerPage' => $ServerPage, 'PageData' => $PageData, 'PageShowData' => $PageShowData ); } //得到最大分页和最小分页 $MaxPage = intval($rows / $num); $double = $rows % $num; if($double > 0.000000001) { $MaxPage += 1; } $MinPage = 1; $ServerPage = 1; //得到页码的全部项目 for($i = 1; $i <= $MaxPage; $i++ ){ $PageData[$i] = $i; } //对页码进行正确性改正 if($page < $MinPage){ $page = 1; } if($page > $MaxPage){ $page = 1; } /*生成显示的页码标签*/ //生成左侧的代码快 if($page == $MinPage){ $PageShowData[1] = $page; } if($page > $MinPage){ $PageShowData[1] = $MinPage; // $PageShowData[2] = $page - 1; // << $PageShowData[2] = '<<'; // << if($page -2 > $MinPage ){ $PageShowData[3] = $page - 2; $PageShowData[4] = $page - 1; }elseif($page -2 == $MinPage){ $PageShowData[3] = $page - 1; } //确定选中的页码代码快 $PageShowData[count($PageShowData) + 1] = $page; } $COUNT = count($PageShowData) + 1; //生成右侧的代码块 if($page == $MaxPage){ return $data = array( 'page' => $page, 'MaxPage' => $MaxPage, 'MinPage' => $MinPage, 'ServerPage' => $ServerPage, 'PageData' => $PageData, 'PageShowData' => $PageShowData ); } if($page < $MaxPage) { if($MaxPage - $page >= 2){ $j = 1; for($i = $COUNT; $i <= $length ; $i++){ $PageShowData[$i] = $page + $j; $j ++; if($PageShowData[$i] == $MaxPage -1){ break; } } } $COUNT = count($PageShowData) + 1; // $PageShowData[$COUNT] = $page + 1; //>> $PageShowData[$COUNT] = '>>'; $PageShowData[$COUNT + 1] = $MaxPage; //得到选中的参数 $ServerPage = $PageShowData[$COUNT-1] + 1; if($ServerPage > $MaxPage){ $ServerPage = 1; } return $data = array( 'page' => $page, 'MaxPage' => $MaxPage, 'MinPage' => $MinPage, 'ServerPage' => $ServerPage, 'PageData' => $PageData, 'PageShowData' => $PageShowData ); } }