What is the content type for pdf while creating attachment via connect PHP/Rest API?

Content

Hi All,

Please let me know whats the content type for pdf while creating the file attachment? 

I have tried with the following lines,

$fattach->ContentType = "application/pdf;

$fattach->ContentType = "application/x-pdf;

 

The file getting created and attached to the incident successfully, but when I open its showing the attached error,

 

Version

Aug 2017

Code Snippet

             $dynamic_content="Sample content to create PDF file from CPHP";
$incident=RNCPHP\Incident::fetch(1059);
$incident->FileAttachments =new RNCPHP\FileAttachmentIncidentArray();
$fattach = new RNCPHP\FileAttachmentIncident();
$fattach->ContentType = "application/pdf";
$fp = $fattach->makeFile();
fwrite( $fp, "$dynamic_content");
fclose( $fp );
$fattach->FileName = "NewTextFile".date("Y-m-d_h_i_s").".pdf";
$fattach->Name = "New Text File ".date("Y-m-d h:i:s").".pdf";
$incident->FileAttachments[] = $fattach;
$incident->save();