PHP paging mysql query results

   function pageSplit($startPos, $rowsPerPage = '', $totalRows = '' )
        {

            $numPages = $totalRows / $rowsPerPage ;
            $tenthPages = $rowsPerPage * 10 ;
            If($startPos >= $tenthPages )
            {
                $back10Position = $startPos - $tenthPages ;
                $pageString .= '<<   ';
            }

            if($startPos >= $rowsPerPage)
            {
                $backPosition = $startPos - $rowsPerPage;
                $pageString .= 'Back ';
            }

            if($totalRows != '')
            {
                     $page = ceil($startPos / $rowsPerPage);
                     $pageCount = $page + $numPages;

                    $PageNo = ceil($startPos / $rowsPerPage )  ;
                    // echo ' Page No ' . $PageNo ;
                    for($i = 1,$pgCnt=1; $page <= $pageCount; $i = $i + $rowsPerPage)
                    {
                        if ( $PageNo == $pgCnt )
                        {
                            $pageString .= ' '.$pgCnt.' ';
                            $pgCnt++;
                        }
                        elseif ($i < $totalRows)
                        {
                            $pageString .= ' '.$pgCnt.' ';
                            $pgCnt++;
                        };

                        $page++;
                    };
            }

            $nextPosition = $startPos + $rowsPerPage;

            if($totalRows == '')
            {
                $pageString .= 'Next  ';
            }
            elseif($startPos < $totalRows )
            {
                If ( $nextPosition < $totalRows )
                {
                    $pageString .= 'Next   ';
                }
            }

            if($startPos < $totalRows )
            {
                $next10Position = $startPos + $tenthPages ;

                If($next10Position < $totalRows )
                {
                    $next10Position = $startPos + $tenthPages ;
                    $pageString .= ' >>';
                }
            }
                return $pageString;
        }
?>

分页, 查询结果, php