Is using JavaScript's onUnload event a reliable method for deleting files after a download in PHP, and what are the considerations to keep in mind?

Using JavaScript's onUnload event to delete files after a download in PHP is not a reliable method because it relies on the user's browser executing the JavaScript code, which may not always happen. A more reliable approach would be to handle the file deletion on the server-side after the download has been completed. 

<?php
// Code to handle file download

// Delete the file after download
$filePath = 'path/to/your/file';
if (file_exists($filePath)) {
    unlink($filePath);
}
?>

Keywords

JavaScript onUnload event file deletion download considerations

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