What are common issues when trying to implement anonymous downloads in PHP?

Common issues when trying to implement anonymous downloads in PHP include file permissions, incorrect headers, and file path errors. To solve these issues, make sure the file you are trying to download has the correct permissions set, use the correct headers to force the browser to download the file instead of displaying it, and ensure the file path is correct. 

<?php
$file = 'path/to/your/file.pdf';

if (file_exists($file)) {
    header('Content-Description: File Transfer');
    header('Content-Type: application/octet-stream');
    header('Content-Disposition: attachment; filename="' . basename($file) . '"');
    header('Expires: 0');
    header('Cache-Control: must-revalidate');
    header('Pragma: public');
    header('Content-Length: ' . filesize($file));
    readfile($file);
    exit;
} else {
    echo 'File not found.';
}
?>

Keywords

HTTP headers file downloads content-disposition session management file permissions

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