1. function getMemoryUsage($precision = 2)
  2. {
  3. $size = memory_get_usage(true);
  4. $unit = ['b', 'kb', 'mb', 'gb', 'tb', 'pb'];
  5. return round($size / pow(1024, ($i = floor(log($size, 1024)))), $precision) . ' ' . $unit[$i];
  6. }