php – 如何在tcpdf的每个页面上放置一个表的列标题？

用于打印pdf的代码如下：

class MYPDF extends TCPDF {

    // Load table data from file
    public function LoadData($file) {
        // Read file lines
        $lines = file($file);
        $data = array();
        foreach($lines as $line) {
            $data[] = explode(';',chop($line));
        }
        return $data;
    }

    // Colored table
    public function ColoredTable($header,$data) {
        // Colors,line width and bold font
        $this->SetFillColor(233,136,64);
        $this->SetTextColor(255);
        $this->SetDrawColor(128,0);
        $this->SetLineWidth(0.3);
        $this->SetFont('','B');
        // Header
        $w = array(10,40,20,20);
        $num_headers = count($header);
        for($i = 0; $i < $num_headers; ++$i) {
            $this->Cell($w[$i],7,$header[$i],1,'C',1);
        }
        $this->Ln();
        // Color and font restoration
        $this->SetFillColor(224,235,255);
        $this->SetTextColor(0);
        $this->SetFont('');
        // Data
        $fill = 0;
        foreach($data as $row) {
            $this->Cell($w[0],6,$row[0],'LR',$fill);
            $this->Cell($w[1],$row[1],'L',$fill);
            $this->Cell($w[2],$row[2],$fill);
            $this->Cell($w[3],$row[3],$fill);
            $this->Cell($w[4],$row[4],$fill);
            $this->Cell($w[5],$row[5],$fill);
            $this->Cell($w[6],$row[6],$fill);
            $this->Ln();
            $fill=!$fill;
        }
        $this->Cell(array_sum($w),'','T');
    }
}

// create new PDF document
$pdf = new MYPDF(PDF_PAGE_ORIENTATION,PDF_UNIT,PDF_PAGE_FORMAT,true,'UTF-8',false);

// set document information
$pdf->SetCreator(PDF_CREATOR);
$pdf->SetAuthor('Nicola Asuni');
$pdf->SetTitle('TCPDF Example 011');
$pdf->SetSubject('TCPDF Tutorial');
$pdf->SetKeywords('TCPDF,PDF,example,test,guide');

// set default header data
$pdf->SetHeaderData(PDF_GYANKUTIR_logo,PDF_HEADER_logo_WIDTH,'GyanKutir','Jhunjhunu International Wisdom City
Near Khemi Shakti Temple
Jhunjhunu (Rajasthan)-333001');

// set header and footer fonts
$pdf->setHeaderFont(Array(PDF_FONT_NAME_MAIN,PDF_FONT_SIZE_MAIN));
$pdf->setFooterFont(Array(PDF_FONT_NAME_DATA,PDF_FONT_SIZE_DATA));

// set default monospaced font
$pdf->SetDefaultMonospacedFont(PDF_FONT_MONOSPACED);

//set margins
$pdf->SetMargins(PDF_MARGIN_LEFT,PDF_MARGIN_TOP,PDF_MARGIN_RIGHT);
$pdf->SetHeaderMargin(PDF_MARGIN_HEADER);
$pdf->SetFooterMargin(PDF_MARGIN_FOOTER);

//set auto page breaks
$pdf->SetAutoPageBreak(TRUE,PDF_MARGIN_BOTTOM);

//set image scale factor
$pdf->setImageScale(PDF_IMAGE_SCALE_RATIO);

//set some language-dependent strings
$pdf->setLanguageArray($l);

// ---------------------------------------------------------

// set font
$pdf->SetFont('helvetica',6);

// add a page
$pdf->AddPage();

//Column titles
$header = array('Rank','Student','Time Used','Correct Answers','Wrong Answers','Questions Skipped','Final score');


$final_data = $smarty->fetch($file_to_show);

$file = fopen("text.txt","w+");

    file_put_contents($file,"");
    fwrite($file,$final_data);
    fclose($file);

ob_start();
        ob_flush();
//Data loading
$data = $pdf->LoadData('text.txt');

// print colored table
$pdf->ColoredTable($header,$data);

// ---------------------------------------------------------
 ob_flush();
//Close and output PDF document
$pdf->Output('example_011.pdf','I');

//============================================================+
// END OF FILE                                                
//============================================================+

我想将标题添加到每个页面上的表列.屏幕截图附有这个问题.在第一个屏幕截图中,标题正在显示,但在第二个屏幕截图中,没有显示.如何在后续页面上显示这些列标题？请帮我解决这个问题.感谢Advance.This图像是pdf中的表格的第一页.

我有两种方法.

方法1：
创建您自己的自定义标题功能(如在TCPDF示例3中)自动将标题单元添加到每个页面.在这种情况下,您可以将标题单元格放置代码移动到类中的标题方法中,并将页眉绘制到页面上的固定位置.由于在添加新页面时自动调用头文件方法,因此,一旦创建页面,就会添加表头.这当然比方法2更快,更少密集,但它可能有点棘手.

方法2：
使用TCPDF事务来检测行何时中断页面,然后回滚.然后你将自己添加AddPage;再次绘制标题;并继续显示.您可以通过在创建行之前获取页数,并将其与之后的页数进行比较.一个例子,你可以这样做：

//Separated Header Drawing into it's own function for reuse.
    public function DrawHeader($header,$w) {
        // Colors,line width and bold font
        // Header
        $this->SetFillColor(233,'B');        
        $num_headers = count($header);
        for($i = 0; $i < $num_headers; ++$i) {
            $this->Cell($w[$i],255);
        $this->SetTextColor(0);
        $this->SetFont('');
    }

    // Colored table
    public function ColoredTable($header,$data) {
        $w = array(10,20);
        $this->DrawHeader($header,$w);

        // Data
        $fill = 0;
        foreach($data as $row) {
            //Get current number of pages.
            $num_pages = $this->getNumPages();
            $this->startTransaction();
            $this->Cell($w[0],$fill);
            $this->Ln();
            //If old number of pages is less than the new number of pages,//we hit an automatic page break,and need to rollback.
            if($num_pages < $this->getNumPages())
            {
                //Undo adding the row.
                $this->rollbackTransaction(true);
                //Adds a bottom line onto the current page. 
                //Note: May cause page break itself.
                $this->Cell(array_sum($w),'T');
                //Add a new page.
                $this->AddPage();
                //Draw the header.
                $this->DrawHeader($header,$w);
                //Re-do the row.
                $this->Cell($w[0],$fill);
                $this->Cell($w[1],$fill);
                $this->Cell($w[2],$fill);
                $this->Cell($w[3],$fill);
                $this->Cell($w[4],$fill);
                $this->Cell($w[5],$fill);
                $this->Cell($w[6],$fill);
                $this->Ln();
            }
            else
            {
                //Otherwise we are fine with this row,discard undo history.
                $this->commitTransaction();
            }
            $fill=!$fill;
        }
        $this->Cell(array_sum($w),'T');
    }

php – 如何在tcpdf的每个页面上放置一个表的列标题？

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