How can PHP be used to address browser compatibility issues related to FTP content display within an iFrame?

When displaying FTP content within an iFrame, browser compatibility issues may arise due to security restrictions. To address this, you can use PHP to act as a proxy server that fetches the FTP content and serves it to the iFrame. This way, the browser sees the content as coming from the same origin as the main page, resolving any cross-origin security issues.

<?php
// Get the FTP file content
$ftp_server = 'ftp.example.com';
$ftp_user = 'username';
$ftp_pass = 'password';
$ftp_file = '/path/to/file.txt';

$ftp_connection = ftp_connect($ftp_server);
ftp_login($ftp_connection, $ftp_user, $ftp_pass);
$ftp_content = ftp_get_contents($ftp_connection, $ftp_file);
ftp_close($ftp_connection);

// Output the FTP content
header('Content-Type: text/plain');
echo $ftp_content;
?>