The expression can be any valid expression as long as it
resolves to a non-negative number.
The expression can be any valid expression as long as it resolves
to a positive number greater than 1.
/** * Calculates the log of a number in the specified base and returns the * result as a double. * * The <number> expression can be any valid expression as long as it * resolves to a non-negative number. * The <base> expression can be any valid expression as long as it resolves * to a positive number greater than 1. * * @see https://docs.mongodb.org/manual/reference/operator/aggregation/log/ * @see Expr::log * @param mixed|Expr $number * @param mixed|Expr $base * @return self * * @since 1.3 */ public function log($number, $base) { $this->expr->log($number, $base); return $this; }