How can writing output to a file or error_log be beneficial for monitoring PHP script execution?

Writing output to a file or error_log can be beneficial for monitoring PHP script execution because it allows you to track the progress of your script, log any errors or warnings that occur, and review the output at a later time. This can help you identify issues, debug problems, and improve the overall performance of your script.

// Write output to a file
$file = 'output.log';
$output = 'This is some output that will be written to the log file.';
file_put_contents($file, $output, FILE_APPEND);

// Write errors to error_log
error_log('An error occurred in the script.', 3, 'error.log');