code: function compareByteSize($a, $b, $compare = '>=')
      {
          $compareExpression = '(' . $this->getByteSize($a) . $compare . $this->getByteSize($b) . ')';
  
          return $this->evaluateExpression($compareExpression);
      }
docs: Compare byte sizes of values given in the verbose representation,
  like '5M', '15K' etc.
  @param string $a first value.
  @param string $b second value.
  @param string $compare comparison operator, by default '>='.
  @return bool comparison result.