When using MPDF to convert HTML to PDF, and then convert the PDF to a PNG image, an error message appears in Chinese...-PHP Tutorial-php.cn

When using MPDF to convert HTML to PDF, and then convert the PDF to a PNG image, an error message appears in Chinese...

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Release： 2016-09-28 08:54:07

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Step one:

Use MPDF (version 6.1) to convert HTML pages to PDF files, and the conversion can be successful. The code is as follows:

<code>$html = "对盲人初学者来说，它无需任何额外的修改。";
// $html = "These are the most used acronyms throughout this manual.";
include './mpdf/mpdf.php';
$mpdf=new mPDF('+aCJK'); 
$mpdf->autoScriptToLang = true;
$mpdf->autoLangToFont = true;
$mpdf->WriteHTML($html);
$mpdf->Output();</code>

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Step 2:

When using imagick to convert PDF to image,
if there is no Chinese in the PDF file , the conversion is successful
If there is Chinese in the PDF file , an error will be reported directly: , error code:

<code>Fatal error: Uncaught exception 'ImagickException' with message 'Failed to read the file' in /home/www/test/index-back.php:26 Stack trace: #0 /home/www/test/index-back.php(26): Imagick->readimage('/home/www/test/...') #1 /home/www/test/index-back.php(48): pdf2png('/home/www/test/...', '/home/www/test/...') #2 {main} thrown in /home/www/test/index-back.php on line 26</code>

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Note: In addition, I found a PDF description file of the public API (basically all in Chinese), used imagick to convert the PDF to png, and the conversion was successful...

PDF to image code:

<code>function pdf2png($PDF, $Path){
   if(!extension_loaded('imagick')){
       return false;
   }
   if(!file_exists($PDF)){
       return false;
   }
   $IM = new imagick();
   $IM->setResolution(120, 120);
   $IM->setCompressionQuality(100);
   $IM->readImage($PDF);
   foreach($IM as $Key => $Var){
       $Var->setImageFormat('png');
       $Filename = $Path.'/'.md5($Key.time()).'.png';
       if($Var->writeImage($Filename)==true){
           $Return[]= $Filename;
       }
   }
   return $Return;
}
$pdf = __DIR__.'/1.pdf';
$path = __DIR__.'/images';
$data = pdf2png($pdf, $path );
var_dump($data);</code>

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Seeking solution:

<code>使用 MPDF 将HTML转为PDF，然后将该PDF转为PNG图片时有中文怎么才能不报错？？
</code>

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Reply content:

Step one:

Use MPDF (version 6.1) to convert HTML pages to PDF files, and the conversion can be successful. The code is as follows:

<code>$html = "对盲人初学者来说，它无需任何额外的修改。";
// $html = "These are the most used acronyms throughout this manual.";
include './mpdf/mpdf.php';
$mpdf=new mPDF('+aCJK'); 
$mpdf->autoScriptToLang = true;
$mpdf->autoLangToFont = true;
$mpdf->WriteHTML($html);
$mpdf->Output();</code>

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Step 2:

<code>Fatal error: Uncaught exception 'ImagickException' with message 'Failed to read the file' in /home/www/test/index-back.php:26 Stack trace: #0 /home/www/test/index-back.php(26): Imagick->readimage('/home/www/test/...') #1 /home/www/test/index-back.php(48): pdf2png('/home/www/test/...', '/home/www/test/...') #2 {main} thrown in /home/www/test/index-back.php on line 26</code>

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Note: In addition, I found a PDF description file of the public API (basically all in Chinese), used imagick to convert the PDF to png, and the conversion was successful...

PDF to image code:

<code>function pdf2png($PDF, $Path){
   if(!extension_loaded('imagick')){
       return false;
   }
   if(!file_exists($PDF)){
       return false;
   }
   $IM = new imagick();
   $IM->setResolution(120, 120);
   $IM->setCompressionQuality(100);
   $IM->readImage($PDF);
   foreach($IM as $Key => $Var){
       $Var->setImageFormat('png');
       $Filename = $Path.'/'.md5($Key.time()).'.png';
       if($Var->writeImage($Filename)==true){
           $Return[]= $Filename;
       }
   }
   return $Return;
}
$pdf = __DIR__.'/1.pdf';
$path = __DIR__.'/images';
$data = pdf2png($pdf, $path );
var_dump($data);</code>

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Please solve:

<code>使用 MPDF 将HTML转为PDF，然后将该PDF转为PNG图片时有中文怎么才能不报错？？
</code>

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