PHP-多个函数返回TCPDF变量

时间:2018-10-26 17:51:43

标签: php tcpdf

我有很多用于创建pdf(TCPDF)的代码,按页眉,正文,页脚分别... 我需要根据需要使用可变坐标调用代码。因为我需要使用if else调用,所以(当然)有多个调用,因此我不必重写相同的代码。

例如,我尝试使用此(子标题):

class invoice {
   function getSubheader($disY){
      $subheader = array(
         $pdf->SetLineWidth(.2),
         $pdf->MultiCell(190,9,'',1,'L',false,0,10,$disY,true),
         $pdf->SetFont('freesans','',7),
         $pdf->MultiCell(50,"",$getDesc['blabla1'],0,'L',false,0,12,$disY+2,true),
         $pdf->MultiCell(15,"",$getDesc['blabla2'],0,'R',false,0,62,$disY+2,true),
         $pdf->MultiCell(20,"",$getDesc['blabla3'],0,'R',false,0,77,$disY+2,true),
         $pdf->MultiCell(15,"",$getDesc['blabla4'],0,'R',false,0,97,$disY+2,true),
         $pdf->MultiCell(25,"",$getDesc['blabla5'],0,'R',false,0,112,$disY+2,true),
         $pdf->MultiCell(15,"",$getDesc['blabla6'],0,'R',false,0,137,$disY+2,true),
         $pdf->MultiCell(20,"",$getDesc['blabla7'],0,'R',false,0,152,$disY+2,true),
         $pdf->MultiCell(25,"",$getDesc['blabla8'],0,'R',false,0,172,$disY+2,true),   
         $pdf->SetFont('freesans','B',8),
         $pdf->MultiCell(180,"",$getDesc['blabla9'],0,'L',false,0,12,$disY+11,true)
      );

      return $subheader;
   }

   others functions...
}

在另一个class中,仅呼叫function

$pdf = new TCPDF (PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false);
$pdf->AddPage();

lot of code $pdf->...

$invoice = new invoice();

if(cond == 1){
   $disY = 100;
   $invoice->getSubheader($disY);
} else {
   $disY = 200;
   $invoice->getSubheader($disY);
}

lot of code $pdf->...    

function必须返回变量$ pdf-> SetLineWidt ...等。 但是,如果我使用此解决方案-错误

Call to a member function SetLineWidth() on null

对新手有何建议?

0 个答案:

没有答案