Display pdf content in browser

php-pdf.php

<?php 
$response = wp_remote_post($url, $args = array());
$header_content = (array) wp_remote_retrieve_headers( $response );
$header = current($header_content);
$data   = wp_remote_retrieve_body( $response );

if ( array_key_exists('content-type', $header) ) {
	if ( $header['content-type'] === 'application/pdf') {
		header("Content-type: application/pdf");
		header('Content-Length: '.strlen( $data ));
		header("Content-disposition: inline;filename=filename-pdf");
		echo $data;
		wp_die();
	} else {
		echo $data;
		wp_die();
	}
}