What are some potential reasons for a download using Readfile in PHP to randomly abort, even with PHP versions 4.x and 5.x?

One potential reason for a download using Readfile in PHP to randomly abort could be due to memory limitations or timeouts set in the PHP configuration. To solve this issue, you can increase the memory_limit and max_execution_time values in your php.ini file or adjust them dynamically within your script using ini_set() function. 

// Increase memory limit and execution time dynamically
ini_set('memory_limit', '256M');
ini_set('max_execution_time', 300); // 5 minutes

// Your code to download file using Readfile
$file = 'path/to/file.ext';
if (file_exists($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

Readfile PHP versions 4.x 5.x download abort

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