Colleagues. Is it possible to open a PDF file directly inside the browser? I tried the file_get_contents () and fopen (), but it opened from decoded. So I tried it that way, but it opened in the entire browser:
$arquivo='0eb178d150b82f5536588fbfea5fa7bd.pdf';
header('Content-type: application/pdf');
header('Content-Disposition: inline; filename="0eb178d150b82f5536588fbfea5fa7bd.pdf"');
@readfile($arquivo);
<?php
$file = './path/to/the.pdf';
$filename = 'Custom file name for the.pdf'; /* Note: Always use .pdf at the end. */
header('Content-type: application/pdf');
header('Content-Disposition: inline; filename="' . $filename . '"');
header('Content-Transfer-Encoding: binary');
header('Content-Length: ' . filesize($file));
header('Accept-Ranges: bytes');
@readfile($file);
?>
Source: link
Code working link