thinkphp 生成pdf

项目需求需要生成pdf，找了很多扩展包，最后选择了TCPDF，功能比较强大，符合项目的开发需求

composer 安装

composer require tecnickcom/tcpdf

官网

https://tcpdf.org/examples/
官网中有许多的例子，可根据自身的需求选择

使用TCPDF

SetCreator(PDF_CREATOR);
        $pdf->SetAuthor('Nicola Asuni');
        $pdf->SetTitle('TCPDF Example 001');
        $pdf->SetSubject('TCPDF Tutorial');
        $pdf->SetKeywords('TCPDF, PDF, example, test, guide');
// set default header data
$pdf->SetHeaderData(PDF_HEADER_LOGO, PDF_HEADER_LOGO_WIDTH, PDF_HEADER_TITLE.' 001', PDF_HEADER_STRING, array(0,64,255), array(0,64,128));
$pdf->setFooterData(array(0,64,0), array(0,64,128));

// 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 (optional)
if (@file_exists(dirname(__FILE__).'/lang/eng.php')) {
    require_once(dirname(__FILE__).'/lang/eng.php');
    $pdf->setLanguageArray($l);
}

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

// set default font subsetting mode
$pdf->setFontSubsetting(true);

// Set font
// dejavusans is a UTF-8 Unicode font, if you only need to
// print standard ASCII chars, you can use core fonts like
// helvetica or times to reduce file size.
$pdf->SetFont('dejavusans', '', 14, '', true);

// Add a page
// This method has several options, check the source code documentation for more information.
$pdf->AddPage();

// set text shadow effect
$pdf->setTextShadow(array('enabled'=>true, 'depth_w'=>0.2, 'depth_h'=>0.2, 'color'=>array(196,196,196), 'opacity'=>1, 'blend_mode'=>'Normal'));

// Set some content to print
$html = <<Welcome to  $kid_namePDF !
This is the first example of TCPDF library.
This text is printed using the writeHTMLCell() method but you can also use: Multicell(), writeHTML(), Write(), Cell() and Text().
Please check the source code documentation and other examples for further information.
TO IMPROVE AND EXPAND TCPDF I NEED YOUR SUPPORT, PLEASE MAKE A DONATION!
EOD;

      // Print text using writeHTMLCell()
      $pdf->writeHTMLCell(0, 0, '', '', $html, 0, 1, 0, true, '', true);

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

      // Close and output PDF document
      // This method has several options, check the source code documentation for more information.
      $pdf->Output('example_001.pdf', 'F');
      return  'example_001.pdf';
    }
}

注意：
1. 因为TCPDF使用定界符的方式输出html等内容，因此上述代码中的$html一直到EOD必须顶格。
2. 中文乱码的问题，将字体改为 $pdf->SetFont('cid0cs', '', 8) 即可。

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