I am using pdftk library to extract the form fields from the pdf .Everything is just running fine except the one issue that i got a pdf file pdf file link. which causes the error is given bellow
Error: Failed to open PDF file:
http://www.uscis.gov/sites/default/files/files/form/i-9.pdf
Done. Input errors, so no output created.
command for this is
root@ri8-MS-7788:/home/ri-8# pdftk http://192.168.1.43/form/i-9.pdf dump_data_fields
the same command is working for all other forms .
Attempt1
I have tried to encrypt the pdf to unsafe version but it produce the same error . here is the command
pdftk http://192.168.1.43/forms/i-9.pdf input_pw foopass output /var/www/forms/un-i-9.pdf
Update
this is my full function to handle this
public function Formanalysis($pdfname)
{
$pdffile=Yii::app()->getBaseUrl(true).'/uploads/forms/'.$pdfname;
exec("pdftk ".$pdffile." dump_data_fields 2>&1", $output,$retval);
//got an error for some pdf if these are secure
if(strpos($output[0],'Error') !== false)
{
$unsafepdf=Yii::getPathOfAlias('webroot').'/uploads/forms/un-'.$pdfname;
//echo "pdftk ".$pdffile." input_pw foopass output ".$unsafepdf;
exec("pdftk ".$pdffile." input_pw foopass output ".$unsafepdf);
exec("pdftk ".$unsafepdf." dump_data_fields 2>&1", $outputunsafe,$retval);
return $outputunsafe ;
//$response=array('0'=>'error','error'=>$output[0]);
//return $response;
}
//if (strpos($output[0],'Error') !== false){ echo "error to run" ; } // this is the option to handle error
return $output;
}
