What would be the preferred format for custom log files?
We generate files in the format
fprintf( $log_file_handle,
"%s - %s [%s] \"%s\" %s\r\n",
$_SERVER['HTTP_CLIENT_IP'] ?? $_SERVER['REMOTE_ADDR'],
$_SESSION['user'] ?? '-',
date( DATE_RFC2822 ),
$mess,
$level );
But...