Question

我正在尝试使用tFPDF库在PHP中生成PDF文件。我从FPDF开始，除了UTF-8字符乱码以外，它都工作良好。经过一番搜索，我发现可以实现tFPDF在PDF文件中包含UTF-8字符。但是我所有的尝试都导致无法打开一个空文件--0 KB文件写入我的硬盘驱动器，并且双击该文件时出现“文件格式有问题”消息。这是我的代码。我在错误日志中没有看到PHP错误，因此很难判断出问题所在。

protected function getPDFFileData($diagnosis_id)
{
    define('FPDF_FONTPATH', JPATH_COMPONENT.'/helpers/font/');
    require_once JPATH_COMPONENT.'/helpers/tfpdf.php';
    //require_once JPATH_COMPONENT.'/helpers/fpdf.php';

    $item = $this->getItem($diagnosis_id);

    $pdf = new tFPDF('P', 'mm', 'Letter');
    //$pdf = new FPDF('P', 'mm', 'Letter');
    $pdf->AddPage();

    $fontname = "dejavusans";
    $pdf->AddFont($fontname, '', 'DejaVuSans.ttf', true);
    $pdf->AddFont($fontname, 'B', 'DejaVuSans-Bold.ttf', true);
    $pdf->AddFont($fontname, 'I', 'DejaVuSans-Oblique.ttf', true);
    $pdf->SetFont($fontname, '', 10);

    /* $fontname = "helvetica";
    $pdf->AddFont($fontname, '', 'helvetica.php');
    $pdf->AddFont($fontname, 'B', 'helveticab.php');
    $pdf->AddFont($fontname, 'I', 'helveticai.php');
    $pdf->SetFont($fontname, '', 10); */

    $domain_header = "Domain".chr(160).($item->ordinal).".".chr(160).($item->domain_label);
    $pdf->Cell(90, 6, $domain_header, 0, 0, 'L');
    $class_header = "Class".chr(160).($item->domain_class_ordinal).".".chr(160).($item->class_label);
    $pdf->Cell(90, 6, $class_header, 0, 1, 'R');
    $pdf->Ln();
    $pdf->SetFont($fontname, '', 10);
    $domain_class_info = "Domain".chr(160).($item->ordinal).chr(160).chr(183).chr(160)."Class".chr(160).($item->domain_class_ordinal).chr(160).chr(183).chr(160)."Diagnosis Code".chr(160).($item->diagnosis_code);
    $pdf->Cell(40, 6, $domain_class_info);
    $pdf->Ln();
    $pdf->SetFont($fontname, '', 14);
    $pdf->Cell(40, 8, $item->diagnosis_label);
    $pdf->Ln();

    // More code that generates more text . . . 

    return $pdf->Output('S');
}

Answer 1

添加新字体需要两个步骤：

字体定义文件的生成
脚本中字体的声明

对于您而言，我们需要生成字体定义文件。例如，我们可以使用命令行：

~/w/t/fpdf181> php makefont/makefont.php font/dejavu-sans/DejaVuSans.ttf cp1252
Font file compressed: DejaVuSans.z
Font definition file generated: DejaVuSans.php

添加字体

$fontname = "DejaVuSans";
$pdf->AddFont($fontname, '', 'DejaVuSans.php', true);

http://www.fpdf.org/en/tutorial/tuto7.htm

[编辑]

根据您的评论，您使用了库http://www.fpdf.org/en/script/script92.php

1）Dejavu已添加到tfpdf/font/unifont文件夹中。并且，名称应为

$fontname = 'DejaVu';

2）如果要添加自定义字体文件夹，则需要覆盖_SYSTEM_TTFONTS

// Optionally define the filesystem path to your system fonts
// otherwise tFPDF will use [path to tFPDF]/font/unifont/ directory
// define("_SYSTEM_TTFONTS", "C:/Windows/Fonts/");

tfpdf / tfpdf.php

 if (defined("_SYSTEM_TTFONTS") && file_exists(_SYSTEM_TTFONTS.$file )) 
 {
    $ttffilename = _SYSTEM_TTFONTS . $file ;
 }
 else {
    $ttffilename = $this->_getfontpath().'unifont/'.$file ;
 }

我创建了一个示例测试：

<?php

// Optionally define the filesystem path to your system fonts
// otherwise tFPDF will use [path to tFPDF]/font/unifont/ directory

//define("_SYSTEM_TTFONTS", "font/dejavu-sans/");

require "tfpdf.php";

$pdf = new tFPDF('P', 'mm', 'Letter');
$pdf->AddPage();

//Example object data
/** @var StdClass $item */
$item = new StdClass();
$item->ordinal = 'Item Ordinal';
$item->domain_label = "Item Domain Label";
$item->domain_class_ordinal = "Item Domain Class Ordinal";
$item->class_label = 'Item Class Label';
$item->diagnosis_code = 'Item Diagnosis Code';
$item->diagnosis_label = 'Item Diagnosis Label';

// Add a Unicode font (uses UTF-8)
$fontname = 'DejaVu';
$pdf->AddFont($fontname,'','DejaVuSans.ttf',true);
$pdf->AddFont($fontname, 'I', 'DejaVuSans-Oblique.ttf', true);
$pdf->AddFont($fontname, 'B', 'DejaVuSans-Bold.ttf', true);
$pdf->SetFont('DejaVu','',14);

$domain_header = "Domain".chr(160).($item->ordinal).".".chr(160).($item->domain_label);
$pdf->Cell(90, 6, $domain_header, 0, 0, 'L');
$class_header = "Class".chr(160).($item->domain_class_ordinal).".".chr(160).($item->class_label);
$pdf->Cell(90, 6, $class_header, 0, 1, 'R');
$pdf->Ln(10);
$pdf->SetFont($fontname, '', 10);
$domain_class_info = "Domain".chr(160).($item->ordinal).chr(160).chr(183).chr(160)."Class".chr(160).($item->domain_class_ordinal).chr(160).chr(183).chr(160)."Diagnosis Code".chr(160).($item->diagnosis_code);
$pdf->Cell(40, 6, $domain_class_info);
$pdf->Ln(10);
$pdf->SetFont($fontname, '', 14);
$pdf->Cell(40, 8, $item->diagnosis_label);
$pdf->Ln(10);

$pdf->Output('S');

Answer 2

这就是最终为我工作的原因。我必须删除对PHP函数chr（）的所有调用，并对ASCII集之外的字符使用特定的UTF-8语法（例如，“ \ u2022”表示项目符号字符）。我相信我找到了在这些字符上使用json_decode（）函数以在stackoverflow上的某个位置呈现所需输出的技巧。我还发现我无法获得使用参数'S'调用Output（）函数以返回字符串的结果，因此我使用文件名参数将输出写入服务器上的文件。这是修改后的功能。

protected function getPDFFileData($diagnosis_id, $output_file_name)
{
    define('FPDF_FONTPATH', JPATH_COMPONENT.'/helpers/fpdf181/font/');
    require_once JPATH_COMPONENT.'/helpers/fpdf181/tfpdf.php';

    $item = $this->getItem($diagnosis_id);

    $pdf = new tFPDF('P', 'mm', 'Letter');
    $pdf->AddPage();

    $fontname = "DejaVu";
    $pdf->AddFont($fontname, '', 'DejaVuSans.ttf', true);
    $pdf->AddFont($fontname, 'B', 'DejaVuSans-Bold.ttf', true);
    $pdf->AddFont($fontname, 'I', 'DejaVuSans-Oblique.ttf', true);
    $pdf->SetFont($fontname, '', 10);

    $bullet_char_uni = '\u2022';
    $bullet_char = json_decode('"'.$bullet_char_uni.'"');

    $domain_header = "Domain ".($item->ordinal).". ".($item->domain_label);
    $pdf->Cell(90, 6, $domain_header, 0, 0, 'L');
    $class_header = "Class ".($item->domain_class_ordinal).". ".($item->class_label);
    $pdf->Cell(90, 6, $class_header, 0, 0, 'R');
    $pdf->Ln();
    $pdf->SetFont($fontname, '', 10);
    $diagnosis_code = "Domain ".($item->ordinal)." ".$bullet_char." Class ".($item->domain_class_ordinal)." ".$bullet_char." Diagnosis Code ".($item->diagnosis_code);
    $pdf->Cell(40, 6, $diagnosis_code, 0, 1, 'L');
    $pdf->Ln();
    $pdf->SetFont($fontname, '', 14);
    $pdf->Cell(40, 8, $item->diagnosis_label, 0, 1, 'L');

    // More code that generates more text . . . 

    $output = $pdf->Output($output_file_name);
    return $output; 
}

tFPDF生成一个空的pdf文件

2 个答案: