What are the potential issues with manipulating max_execution_time in PHP for file downloads?

Manipulating max_execution_time in PHP for file downloads can lead to potential issues such as incomplete downloads or timeouts if the execution time is not long enough for large files to be fully downloaded. To solve this issue, you can increase the max_execution_time value to allow sufficient time for the file download to complete successfully.

// Set max_execution_time to 0 for unlimited execution time
ini_set('max_execution_time', 0);

// Code for file download
$file = 'path/to/file';
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="' . basename($file) . '"');
header('Content-Length: ' . filesize($file));
readfile($file);
exit;