加速TCPDF文件生成

Question

我一直在使用TCPDF，以便将HTML转换为pdf。

我注意到单页发票是在5秒内生成的，而7页发票是在55秒内生成的，原因我说不清。

我使用的是最新的TCPDF版本，我也尝试过使用这个解决方案，还设置了setFontSubsetting(false)，但这些解决方案都没有改善TCPDF文件生成速度慢的问题。

这是程序的完整代码：

    <?php
set_time_limit(0);
require('modifyDate.php');
require('createQuery.php');

//GET FORM DATA
if(isset($_POST['submitMeshavek']))
{
$saleStart=$_POST['saleStart'];
$saleEnd=$_POST['saleEnd'];
$saleWeek=$_POST['weekId'];
$growerId=$_POST['growerId'];
$reportType=$_POST['reportType'];
}

//REQUIRE TCPDF
require_once('tcpdf/config/lang/eng.php');
require_once('tcpdf/config/lang/heb.php');
require_once('tcpdf/tcpdf.php');

class MYPDF extends TCPDF {

    //Page header
    public function Header() {
        // Set font
        $this->SetFont('helvetica', 'B', 20);
        // Title
        $this->Cell(0, 15, '<< TCPDF Example 003 >>', 0, false, 'C', 0, '', 0, false, 'M', 'M');
    }

    // Page footer
    public function Footer() {
        // Position at 15 mm from bottom
        $this->SetY(-15);
        // Set font
        $this->SetFont('helvetica', 'I', 8);
        // Page number
        $this->Cell(0, 10, 'Page '.$this->getAliasNumPage().'/'.$this->getAliasNbPages(), 0, false, 'C', 0, '', 0, false, 'T', 'M');
    }
}



// create new PDF document
$pdf = new TCPDF(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 018');
$pdf->SetSubject('TCPDF Tutorial');
$pdf->SetKeywords('TCPDF, PDF, example, test, guide');
*/
// SET CUSTOMIZED DATE INCLUDED HEADER
$headerSDate=reverseLongDate($saleStart);
$headerEDate=reverseLongDate($saleEnd);
$header="";
$header.="\t";
$header.=Date("d-m-Y h:m:s");
$header.="\n";
$header.='מועדון המגדלים יוסי חותה פירות וירקות';
$header.="\n";
$header.='דו"ח שיווק ללקוח לתאריכים '.$headerSDate." עד ".$headerEDate;

$pdf->SetHeaderData("","" ,"",$header); 
//$pdf->SetHeaderData(PDF_HEADER_LOGO, PDF_HEADER_LOGO_WIDTH, PDF_HEADER_TITLE, PDF_HEADER_STRING);



// set header and footer fonts
$pdf->setHeaderFont(Array("dejavusans", '', "15"));
$pdf->setFooterFont(Array("dejavusans", '', "12"));

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

//set margins
$pdf->SetMargins(PDF_MARGIN_LEFT, PDF_MARGIN_TOP, PDF_MARGIN_RIGHT);
$pdf->SetHeaderMargin(0);
$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 data:
$lg = Array();
$lg['a_meta_charset'] = 'UTF-8';
$lg['a_meta_dir'] = 'rtl';
$lg['a_meta_language'] = 'fa';
$lg['w_page'] = 'page';

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

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

// set font
$pdf->SetFont('dejavusans', '', 12);

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




/*
$regularSaleStart=reverseDate($saleStart);
$regularSaleEnd=reverseDate($saleEnd);
$header='<h2>מועדון מגדלים יוסי חותה פירות וירקות</h2>';
$header.="דוח שיווק ללקוח לתאריכים                 ".$regularSaleEnd." ".$regularSaleStart;

 public function Header() {
        // Set font
        $this->SetFont('dejavusans', '', 10);
        // Title
        $this->Cell(0, 15, '<< TCPDF Example 003 >>', 0, false, 'C', 0, '', 0, false, 'M', 'M');
    }
*/

if($reportType=='customer')
{
    include('reportType/customer.php');
}
else
    if($reportType=='newCustomer')
    {
        include('reportType/customerNew.php');
    }
    else 
        if($reportType=='collection')
            {
            include('reportType/collect.php');
            }
                else 
                    if($reportType=='grower')
                    {
                        include('reportType/grower.php');
                    }

ob_clean();
//$pdf->writeHTML($html, true, false, false, false, '');
$pdf->writeHTML($html, true, 0, true, 0);
//Close and output PDF document
$pdf->Output('example_048.pdf', 'I');

$pdf->writeHTML($html, true, 0, true, 0);
//Close and output PDF document
$pdf->Output('examp.pdf', 'I');


?>

为了让TCPDF运行得更快，我似乎一直在尝试做任何可能的事情，任何建议都将不胜感激，提前谢谢！

Answer 1

尽量不要使用HTML，它比使用静态PDF原生方法慢得多，对我们来说，它将pdf加载时间减少到50%，使用：

$pdf->multiCell($a-lot-of-params);

如果你真的很关心速度的话…

希望这能有所帮助。