如何證明文件在fpdf

Question

我們正在使用FPDF在PDF格式的報告。 我們通過使用$pdf->WriteHTML(utf8_decode($main));來獲取我們的pdf報告中的文本，現在我們想要在報告中證明文本的正確性，但我們無法做到這一點。

請爲此提出解決方案。

謝謝！

Answer 1

使用Tag-based formatting腳本。我不使用類PDF_HTML，這樣只有「髒」的解決方案：

<?php 
require('fpdf.php'); 
class PDF_HTML extends FPDF { 
... 
    elseif($this->ALIGN == 'center') 
     $this->Cell(0,5,$e,0,1,'C'); 
    elseif($this->ALIGN == 'justify') { 
     //$this->SetStyle("p","arial","N",7,"0,0,0"); //TODO 
     $this->WriteTag(180, 11, $e, 0, "J");// TODO parameters 
    } else 
... 
} 
class PDF_WriteTag extends PDF_HTML { 
... 
} 

ob_start(); // TODO delete after correcting any errors (only for demo) 
$pdf = new PDF_WriteTag(); 
$pdf->AddPage(); 
$pdf->SetFont('Arial'); 
$pdf->WriteHTML('You can<br><p align="center">center a line</p>and add a horizontal rule:<br><hr>'); 
$pdf->WriteHTML('You can<br><p align="justify">Et magnis dis parturient montes, nascetur ridiculus mus. Pellentesque vitae erat. Vivamus porttitor cursus lacus. Pellentesque tellus. Nunc aliquam interdum felis. Nulla imperdiet leo. Mauris hendrerit, sem at mollis pharetra, leo sapien pretium elit, a faucibus sapien dolor vel pede. Vestibulum et enim ut nulla sollicitudin adipiscing. Suspendisse malesuada venenatis mauris. Curabitur ornare mollis velit. Sed vitae metus. Morbi posuere mi id odio. Donec elit sem, tempor at, pharetra eu, sodales sit amet, elitCurabitur urna tellus, aliquam vitae, ultrices eget, vehicula nec, diam. Integer elementum, felis non faucibus euismod, erat massa dictum eros, eu ornare ligula tortor et mauris. Cras molestie. 
</p>and add a horizontal rule:<br><hr>'); 
ob_clean(); //TODO delete after correcting any errors 
$pdf->Output(); 

Answer 2

本教程介紹瞭如何使用WriteHTML證明。

http://www.fpdf.org/en/script/script41.php

demo

代碼：

<?php 
require('fpdf.php'); 

class PDF_HTML extends FPDF 
{ 
    var $B=0; 
    var $I=0; 
    var $U=0; 
    var $HREF=''; 
    var $ALIGN=''; 

    function WriteHTML($html) 
    { 
     //HTML parser 
     $html=str_replace("\n",' ',$html); 
     $a=preg_split('/<(.*)>/U',$html,-1,PREG_SPLIT_DELIM_CAPTURE); 
     foreach($a as $i=>$e) 
     { 
      if($i%2==0) 
      { 
       //Text 
       if($this->HREF) 
        $this->PutLink($this->HREF,$e); 
       elseif($this->ALIGN=='center') 
        $this->Cell(0,5,$e,0,1,'C'); 
       else 
        $this->Write(5,$e); 
      } 
      else 
      { 
       //Tag 
       if($e[0]=='/') 
        $this->CloseTag(strtoupper(substr($e,1))); 
       else 
       { 
        //Extract properties 
        $a2=explode(' ',$e); 
        $tag=strtoupper(array_shift($a2)); 
        $prop=array(); 
        foreach($a2 as $v) 
        { 
         if(preg_match('/([^=]*)=["\']?([^"\']*)/',$v,$a3)) 
          $prop[strtoupper($a3[1])]=$a3[2]; 
        } 
        $this->OpenTag($tag,$prop); 
       } 
      } 
     } 
    } 

    function OpenTag($tag,$prop) 
    { 
     //Opening tag 
     if($tag=='B' || $tag=='I' || $tag=='U') 
      $this->SetStyle($tag,true); 
     if($tag=='A') 
      $this->HREF=$prop['HREF']; 
     if($tag=='BR') 
      $this->Ln(5); 
     if($tag=='P') 
      $this->ALIGN=$prop['ALIGN']; 
     if($tag=='HR') 
     { 
      if(!empty($prop['WIDTH'])) 
       $Width = $prop['WIDTH']; 
      else 
       $Width = $this->w - $this->lMargin-$this->rMargin; 
      $this->Ln(2); 
      $x = $this->GetX(); 
      $y = $this->GetY(); 
      $this->SetLineWidth(0.4); 
      $this->Line($x,$y,$x+$Width,$y); 
      $this->SetLineWidth(0.2); 
      $this->Ln(2); 
     } 
    } 

    function CloseTag($tag) 
    { 
     //Closing tag 
     if($tag=='B' || $tag=='I' || $tag=='U') 
      $this->SetStyle($tag,false); 
     if($tag=='A') 
      $this->HREF=''; 
     if($tag=='P') 
      $this->ALIGN=''; 
    } 

    function SetStyle($tag,$enable) 
    { 
     //Modify style and select corresponding font 
     $this->$tag+=($enable ? 1 : -1); 
     $style=''; 
     foreach(array('B','I','U') as $s) 
      if($this->$s>0) 
       $style.=$s; 
     $this->SetFont('',$style); 
    } 

    function PutLink($URL,$txt) 
    { 
     //Put a hyperlink 
     $this->SetTextColor(0,0,255); 
     $this->SetStyle('U',true); 
     $this->Write(5,$txt,$URL); 
     $this->SetStyle('U',false); 
     $this->SetTextColor(0); 
    } 
} 
?> 

用法：

<?php 
require('WriteHTML.php'); 

$pdf=new PDF_HTML(); 
$pdf->AddPage(); 
$pdf->SetFont('Arial'); 
$pdf->WriteHTML('You can<br><p align="center">center a line</p>and add a horizontal rule:<br><hr>'); 
$pdf->Output(); 
?>