在多单元格表格中，如何根据每行的行数绘制边框，防止数据流入新页面 - In Multicell table how to draw border according to number of lines in each row and prevent data flowing into new page

In Multicell table how to draw border according to number of lines in each row and prevent data flowing into new page

我正在使用PHP/TCPDF中的Multicell（）函数创建一个pdf表。我面临的两个问题是

表（3x3）的每一行都有不同数量的数据线，因此如何为每一行绘制水平线，考虑到每一行的最大行数

如何计算分页符？例如，如果第2行的数据流入下一页。如何在新页面中重写完整的表格，或在新页面的第2行以表格的副标题开始？对这两种情况的任何投入都是值得赞赏的。我尝试了以下文章的输入http://www.onemoretake.com/2009/03/27/revisited-tcpdf-variable-height-table-rows-with-multicell/

public function xyz($arr_1){
$f1 = $arr_1[f1];
$f2 = $arr_1[f2];
$f3 = $arr_1[f3];
$numL1 = substr_count($f1, "'n" );
$numL2 = substr_count($f2, "'n" );
$numL3 = substr_count($f3, "'n" );
$Maxrowlines = max($numL1, $numL2, $numL3)*6;
if($this->GetY() + $Maxrowlines  > $this->PageBreakTrigger){
            $this->AddPage();
        }
$startx = $this->GetX();
$starty = $this->GetY();
$rowmaxy = $starty + $Maxrowlines;
$this->MultiCell(40,10,$txt = $arr_1[f1],'0','L',0, $ln =0);
$this->MultiCell(40,10,$txt = $arr_2[f2],'0','L',0, $ln =0);
$this->MultiCell(40,10,$txt = $arr_3[f3],'0','L',0, $ln =0);
$this ->SetXY($startx, $starty);
$tempy = $this->GetY();
    $this->SetXY($startx, $tempy);
    if($temp < $rowmaxy){
        $diffy = $rowmaxy - $tempy;
        $this->MultiCell(40,$diffy, '' , '0', 'C', 0);
    } else {
        $this->MultiCell(40,0,'','0','C',0);
    }
        $addx = $this->GetX();
        $startx+= $addx;    
}
$arr_1 = array(f1=> $apple , f2=> $oranges, f3=> $mangoes);                 
$pdf->xyz($arr_1);

修复很容易。虽然花了一些时间，但这里是解决办法。

# define methods and classes-----------------
# constructors....class...
public function xyz($arr_1){
     $f1 = $arr_1[f1];
     $f2 = $arr_1[f2];
     $f3 = $arr_1[f3];
    $numL1 = substr_count($f1, "'n" );
    $numL2 = substr_count($f2, "'n" );
    $numL3 = substr_count($f3, "'n" );
    $Maxrowlines = max($numL1, $numL2, $numL3)*6;
      $startx = $this->GetX();
      $starty = $this->GetY();
      $rowmaxy = $starty + $Maxrowlines;
$this ->SetXY($startx, $starty);
      $this->MultiCell(40,10,$txt = $arr_1[f1],'0','L',0, $ln =0);
      $this->MultiCell(40,10,$txt = $arr_2[f2],'0','L',0, $ln =0);
      $this->MultiCell(40,10,$txt = $arr_3[f3],'0','L',0, $ln =0);
    # Now, if the lines in a multicell are overflowing into next row
    # get current Y position store it in a variable
    # SetXY to the current Y and if the tempy is less than the rowmaxy we..
    # calculate extend cell height with that difference 
        $tempy = $this->GetY();
            $this->SetXY($startx, $tempy);
            if($tempy < $rowmaxy){
            $diffy = $rowmaxy - $tempy;
            $this->MultiCell(40,$diffy, '' , '0', 'C', 0);
            } 
  }
#--------------Call the functions.........
#..... invoke the main class and methods...
# main code as follows..
$arr_1 = array(f1=> $apple , f2=> $oranges, f3=> $mangoes);
$rowcount = max($pdf->getNumLines($arr_1 ['f1'],40),
                                $pdf->getNumLines($arr_1['f2'],40),
                                $pdf->getNumLines($arr_1 ['f3'],40));
$height_of_cell = $pdf->GetY()+($rowcount*6); # 6 is adjustment of the
# height to font you use. My case, `helvetica`
$dimensions = $pdf->getPageDimensions();
$page_height = $dimensions['hk'];# standard value 286;
$bottom_margin = $dimensions['bm'];# standard value of 20
if($height_of_cell > $page_height - $bottom_margin) {   
    $pdf->AddPage();
    $pdf->your_TableHeader();# call table header if there is one
    $pdf->Ln(10); # No. Line you want to start printing data below header 
}
$pdf->xyz($arr_1);

更新，看起来这个答案没有解决所有行的溢出问题——它特定于1行。接受任何建议或改进。另一方面，分页符的工作非常完美。