// Get the content of the blank PDF of all instruments
$pdf_content = REDCap::getPDF();

// Save the PDF to a local web server directory
file_put_contents("/var/app001/my_pdfs/blank.pdf", $pdf_content);

// We have our record name and instrument name
$record = '101';
$instrument = 'participant_info';

// Get the content of the PDF for one record and one instrument
$pdf_content = REDCap::getPDF($record, $instrument);

// Set PHP headers to display the PDF inline in the web browser
header('Content-type: application/pdf');
header('Content-disposition: inline; filename="redcap_instrument.pdf"');

// Output the PDF content
print $pdf_content;

// We have our record name, instrument name, and event_id
$record = '101';
$instrument = 'participant_info';
$event_id = 339;

// Get the content of the PDF for one record for one event for one instrument
$pdf_content = REDCap::getPDF($record, $instrument, $event_id);

// Set PHP headers to output the PDF to be downloaded as a file in the web browser
header('Content-type: application/pdf');
header('Content-disposition: attachment; filename="redcap_instrument.pdf"');

// Output the PDF content
print $pdf_content;

// Get the content of the PDF of all instruments and all records
$pdf_content = REDCap::getPDF(null, null, null, true);

// Save the PDF to a local web server directory
file_put_contents("C:\\my_pdfs\\all_records.pdf", $pdf_content);