How can PHP developers effectively troubleshoot and debug issues related to file download functionality in their scripts?

To effectively troubleshoot and debug issues related to file download functionality in PHP scripts, developers can start by checking the file paths and permissions, ensuring that the correct headers are set for file downloads, and verifying that the file exists before attempting to download it. 

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

if (file_exists($file_path)) {
    header('Content-Description: File Transfer');
    header('Content-Type: application/pdf');
    header('Content-Disposition: attachment; filename=' . basename($file_path));
    header('Content-Length: ' . filesize($file_path));
    
    readfile($file_path);
    exit;
} else {
    echo 'File not found.';
}
?>

Keywords

file download PHP debugging troubleshooting error handling headers

Related Questions