What are the advantages and disadvantages of using readfile() versus FTP functions for downloading files in PHP?

When downloading files in PHP, using readfile() is a simple and straightforward way to retrieve files from a server and output them directly to the browser. However, using FTP functions can provide more flexibility and control over the download process, such as handling authentication, managing file transfers, and supporting secure connections. The choice between readfile() and FTP functions depends on the specific requirements of the project, with readfile() being easier to implement for simple file downloads and FTP functions being more suitable for complex file management tasks. 

// Using readfile() to download a file
$file = 'example.txt';
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="' . basename($file) . '"');
readfile($file);
exit;

Keywords

readfile() FTP functions advantages disadvantages downloading files

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